diff --git a/samplebrain/qt/MainWindow.cpp b/samplebrain/qt/MainWindow.cpp
index 4a8e9fe..ac60257 100644
--- a/samplebrain/qt/MainWindow.cpp
+++ b/samplebrain/qt/MainWindow.cpp
@@ -37,6 +37,6 @@ void MainWindow::init_brain() {
 
     //target.resynth_listen("shosta-dream-0.5.wav",source,0.5,a);
 
-    m_renderer = new renderer(m_source,m_target,1);
+    m_renderer = new renderer(m_source,m_target);
 
 }
diff --git a/samplebrain/qt/MainWindow.h b/samplebrain/qt/MainWindow.h
index edb0ac2..537c442 100644
--- a/samplebrain/qt/MainWindow.h
+++ b/samplebrain/qt/MainWindow.h
@@ -20,15 +20,15 @@ protected:
 
 private slots:
 
-    void play_slot() {}
-    void stop_slot() {}
-    void ratio_slot(int s) { m_renderer->set_ratio(s/100.0f); }
-    void ratio_slot(double) {}
-    void fft1_start_slot(int) {}
-    void fft1_end_slot(int) {}
-    void fft2_start_slot(int) {}
-    void fft2_end_slot(int) {}
-    void volume_slot(int) {}
+    void play_slot() { m_renderer->set_playing(true); }
+    void stop_slot() { m_renderer->set_playing(false); }
+    void ratio_slot(int s) { m_renderer->get_params()->m_ratio=s/100.0f; }
+    void ratio_slot(double s) { m_renderer->get_params()->m_ratio=s/100.0f; }
+    void fft1_start_slot(int s) { m_renderer->get_params()->m_fft1_start=s; }
+    void fft1_end_slot(int s) { m_renderer->get_params()->m_fft1_end=s; }
+    void fft2_start_slot(int s) { m_renderer->get_params()->m_fft2_start=s; }
+    void fft2_end_slot(int s) { m_renderer->get_params()->m_fft2_end=s; }
+    void volume_slot(int s) {  m_renderer->set_volume(s/50.0f); }
     void run_slot() {}
     void load_target() {}
     void target_block_size(int) {}
diff --git a/samplebrain/qt/generated/.#ui_samplebrain.h b/samplebrain/qt/generated/.#ui_samplebrain.h
deleted file mode 120000
index aaa8380..0000000
--- a/samplebrain/qt/generated/.#ui_samplebrain.h
+++ /dev/null
@@ -1 +0,0 @@
-dave@fulmar.5193:1436562455
\ No newline at end of file
diff --git a/samplebrain/qt/generated/ui_samplebrain.h b/samplebrain/qt/generated/ui_samplebrain.h
index 52aa0d8..aec1ed1 100644
--- a/samplebrain/qt/generated/ui_samplebrain.h
+++ b/samplebrain/qt/generated/ui_samplebrain.h
@@ -1,14 +1,14 @@
 /********************************************************************************
-** Form generated from reading UI file 'samplebrainYv5241.ui'
+** Form generated from reading UI file 'samplebrainxS5241.ui'
 **
-** Created: Sat Jul 11 10:34:17 2015
+** Created: Sat Jul 11 12:25:49 2015
 **      by: Qt User Interface Compiler version 4.8.1
 **
 ** WARNING! All changes made in this file will be lost when recompiling UI file!
 ********************************************************************************/
 
-#ifndef SAMPLEBRAINYV5241_H
-#define SAMPLEBRAINYV5241_H
+#ifndef SAMPLEBRAINXS5241_H
+#define SAMPLEBRAINXS5241_H
 
 #include <QtCore/QVariant>
 #include <QtGui/QAction>
@@ -22,12 +22,10 @@
 #include <QtGui/QListWidget>
 #include <QtGui/QMainWindow>
 #include <QtGui/QPushButton>
-#include <QtGui/QSlider>
 #include <QtGui/QSpacerItem>
 #include <QtGui/QSpinBox>
 #include <QtGui/QStatusBar>
 #include <QtGui/QTabWidget>
-#include <QtGui/QTextEdit>
 #include <QtGui/QVBoxLayout>
 #include <QtGui/QWidget>
 
@@ -47,6 +45,7 @@ public:
     QPushButton *pushButtonPlay;
     QPushButton *pushButtonStop;
     QVBoxLayout *verticalLayout_3;
+    QHBoxLayout *horizontalLayout_16;
     QLabel *label_6;
     QDial *dialRatio;
     QDoubleSpinBox *doubleSpinBoxRatio;
@@ -66,10 +65,10 @@ public:
     QHBoxLayout *horizontalLayout_11;
     QLabel *label_12;
     QSpinBox *spinBoxFFT2End;
+    QSpacerItem *verticalSpacer_3;
     QVBoxLayout *verticalLayout_6;
     QLabel *label_13;
-    QSlider *verticalSliderVolume;
-    QSpacerItem *verticalSpacer_3;
+    QDial *dialVolume;
     QVBoxLayout *verticalLayout_9;
     QLabel *label_16;
     QLabel *label_15;
@@ -82,10 +81,6 @@ public:
     QSpinBox *spinBoxBlockOverlapTarget;
     QPushButton *pushButtonGenerateTarget;
     QSpacerItem *verticalSpacer;
-    QVBoxLayout *verticalLayout_8;
-    QLabel *label_14;
-    QTextEdit *textEdit;
-    QPushButton *pushButtonRun;
     QWidget *sampleTab;
     QHBoxLayout *horizontalLayout_8;
     QVBoxLayout *verticalLayout_2;
@@ -115,7 +110,7 @@ public:
     {
         if (MainWindow->objectName().isEmpty())
             MainWindow->setObjectName(QString::fromUtf8("MainWindow"));
-        MainWindow->resize(800, 603);
+        MainWindow->resize(724, 603);
         centralwidget = new QWidget(MainWindow);
         centralwidget->setObjectName(QString::fromUtf8("centralwidget"));
         horizontalLayout = new QHBoxLayout(centralwidget);
@@ -163,17 +158,33 @@ public:
 
         verticalLayout_3 = new QVBoxLayout();
         verticalLayout_3->setObjectName(QString::fromUtf8("verticalLayout_3"));
+        horizontalLayout_16 = new QHBoxLayout();
+        horizontalLayout_16->setObjectName(QString::fromUtf8("horizontalLayout_16"));
         label_6 = new QLabel(controlTab);
         label_6->setObjectName(QString::fromUtf8("label_6"));
-        label_6->setFont(font1);
+        QFont font2;
+        font2.setFamily(QString::fromUtf8("Comic Sans MS"));
+        font2.setPointSize(14);
+        font2.setBold(true);
+        font2.setWeight(75);
+        label_6->setFont(font2);
 
-        verticalLayout_3->addWidget(label_6);
+        horizontalLayout_16->addWidget(label_6);
 
         dialRatio = new QDial(controlTab);
         dialRatio->setObjectName(QString::fromUtf8("dialRatio"));
         dialRatio->setEnabled(true);
+        QSizePolicy sizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
+        sizePolicy.setHorizontalStretch(0);
+        sizePolicy.setVerticalStretch(0);
+        sizePolicy.setHeightForWidth(dialRatio->sizePolicy().hasHeightForWidth());
+        dialRatio->setSizePolicy(sizePolicy);
+        dialRatio->setMinimumSize(QSize(60, 60));
 
-        verticalLayout_3->addWidget(dialRatio);
+        horizontalLayout_16->addWidget(dialRatio);
+
+
+        verticalLayout_3->addLayout(horizontalLayout_16);
 
         doubleSpinBoxRatio = new QDoubleSpinBox(controlTab);
         doubleSpinBoxRatio->setObjectName(QString::fromUtf8("doubleSpinBoxRatio"));
@@ -184,7 +195,7 @@ public:
         verticalLayout_4->setObjectName(QString::fromUtf8("verticalLayout_4"));
         label_7 = new QLabel(controlTab);
         label_7->setObjectName(QString::fromUtf8("label_7"));
-        label_7->setFont(font1);
+        label_7->setFont(font2);
 
         verticalLayout_4->addWidget(label_7);
 
@@ -227,7 +238,7 @@ public:
         verticalLayout_5->setObjectName(QString::fromUtf8("verticalLayout_5"));
         label_8 = new QLabel(controlTab);
         label_8->setObjectName(QString::fromUtf8("label_8"));
-        label_8->setFont(font1);
+        label_8->setFont(font2);
 
         verticalLayout_5->addWidget(label_8);
 
@@ -269,6 +280,10 @@ public:
 
         verticalLayout_7->addLayout(verticalLayout_3);
 
+        verticalSpacer_3 = new QSpacerItem(323, 511, QSizePolicy::Minimum, QSizePolicy::Expanding);
+
+        verticalLayout_7->addItem(verticalSpacer_3);
+
         verticalLayout_6 = new QVBoxLayout();
         verticalLayout_6->setObjectName(QString::fromUtf8("verticalLayout_6"));
         label_13 = new QLabel(controlTab);
@@ -277,19 +292,15 @@ public:
 
         verticalLayout_6->addWidget(label_13);
 
-        verticalSliderVolume = new QSlider(controlTab);
-        verticalSliderVolume->setObjectName(QString::fromUtf8("verticalSliderVolume"));
-        verticalSliderVolume->setOrientation(Qt::Vertical);
+        dialVolume = new QDial(controlTab);
+        dialVolume->setObjectName(QString::fromUtf8("dialVolume"));
+        dialVolume->setValue(99);
 
-        verticalLayout_6->addWidget(verticalSliderVolume);
+        verticalLayout_6->addWidget(dialVolume);
 
 
         verticalLayout_7->addLayout(verticalLayout_6);
 
-        verticalSpacer_3 = new QSpacerItem(20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding);
-
-        verticalLayout_7->addItem(verticalSpacer_3);
-
 
         horizontalLayout_15->addLayout(verticalLayout_7);
 
@@ -358,28 +369,6 @@ public:
 
         horizontalLayout_15->addLayout(verticalLayout_9);
 
-        verticalLayout_8 = new QVBoxLayout();
-        verticalLayout_8->setObjectName(QString::fromUtf8("verticalLayout_8"));
-        label_14 = new QLabel(controlTab);
-        label_14->setObjectName(QString::fromUtf8("label_14"));
-        label_14->setFont(font);
-
-        verticalLayout_8->addWidget(label_14);
-
-        textEdit = new QTextEdit(controlTab);
-        textEdit->setObjectName(QString::fromUtf8("textEdit"));
-
-        verticalLayout_8->addWidget(textEdit);
-
-        pushButtonRun = new QPushButton(controlTab);
-        pushButtonRun->setObjectName(QString::fromUtf8("pushButtonRun"));
-        pushButtonRun->setFont(font1);
-
-        verticalLayout_8->addWidget(pushButtonRun);
-
-
-        horizontalLayout_15->addLayout(verticalLayout_8);
-
         tabWidget->addTab(controlTab, QString());
         sampleTab = new QWidget();
         sampleTab->setObjectName(QString::fromUtf8("sampleTab"));
@@ -516,8 +505,6 @@ public:
         QObject::connect(spinBoxFFT1End, SIGNAL(valueChanged(int)), MainWindow, SLOT(fft1_end_slot(int)));
         QObject::connect(spinBoxFFT2Start, SIGNAL(valueChanged(int)), MainWindow, SLOT(fft2_start_slot(int)));
         QObject::connect(spinBoxFFT2End, SIGNAL(valueChanged(int)), MainWindow, SLOT(fft2_end_slot(int)));
-        QObject::connect(verticalSliderVolume, SIGNAL(sliderMoved(int)), MainWindow, SLOT(volume_slot(int)));
-        QObject::connect(pushButtonRun, SIGNAL(released()), MainWindow, SLOT(run_slot()));
         QObject::connect(pushButtonLoadTarget, SIGNAL(released()), MainWindow, SLOT(load_target()));
         QObject::connect(spinBoxBlockSizeTarget, SIGNAL(valueChanged(int)), MainWindow, SLOT(target_block_size(int)));
         QObject::connect(spinBoxBlockOverlapTarget, SIGNAL(valueChanged(int)), MainWindow, SLOT(target_block_overlap(int)));
@@ -527,8 +514,9 @@ public:
         QObject::connect(spinBoxSpectSize, SIGNAL(valueChanged(int)), MainWindow, SLOT(fft_spectrum_size(int)));
         QObject::connect(pushButtonGenerate, SIGNAL(released()), MainWindow, SLOT(generate()));
         QObject::connect(pushButtonLoadSound, SIGNAL(released()), MainWindow, SLOT(load_sound()));
+        QObject::connect(dialVolume, SIGNAL(sliderMoved(int)), MainWindow, SLOT(volume_slot(int)));
 
-        tabWidget->setCurrentIndex(1);
+        tabWidget->setCurrentIndex(0);
 
 
         QMetaObject::connectSlotsByName(MainWindow);
@@ -549,13 +537,11 @@ public:
         label_12->setText(QApplication::translate("MainWindow", "End", 0, QApplication::UnicodeUTF8));
         label_13->setText(QApplication::translate("MainWindow", "Volume", 0, QApplication::UnicodeUTF8));
         label_16->setText(QApplication::translate("MainWindow", "target sound", 0, QApplication::UnicodeUTF8));
-        label_15->setText(QApplication::translate("MainWindow", "TextLabel", 0, QApplication::UnicodeUTF8));
+        label_15->setText(QApplication::translate("MainWindow", "no sound yet...", 0, QApplication::UnicodeUTF8));
         pushButtonLoadTarget->setText(QApplication::translate("MainWindow", "load target", 0, QApplication::UnicodeUTF8));
         label_17->setText(QApplication::translate("MainWindow", "block size", 0, QApplication::UnicodeUTF8));
         label_18->setText(QApplication::translate("MainWindow", "block overlap", 0, QApplication::UnicodeUTF8));
         pushButtonGenerateTarget->setText(QApplication::translate("MainWindow", "generate blocks", 0, QApplication::UnicodeUTF8));
-        label_14->setText(QApplication::translate("MainWindow", "livecode brain", 0, QApplication::UnicodeUTF8));
-        pushButtonRun->setText(QApplication::translate("MainWindow", "run", 0, QApplication::UnicodeUTF8));
         tabWidget->setTabText(tabWidget->indexOf(controlTab), QApplication::translate("MainWindow", "search", 0, QApplication::UnicodeUTF8));
         label_3->setText(QApplication::translate("MainWindow", "brain parameters", 0, QApplication::UnicodeUTF8));
         label->setText(QApplication::translate("MainWindow", "block size", 0, QApplication::UnicodeUTF8));
@@ -577,4 +563,4 @@ namespace Ui {
 
 QT_END_NAMESPACE
 
-#endif // SAMPLEBRAINYV5241_H
+#endif // SAMPLEBRAINXS5241_H
diff --git a/samplebrain/src/block.cpp b/samplebrain/src/block.cpp
index b983065..75721b5 100644
--- a/samplebrain/src/block.cpp
+++ b/samplebrain/src/block.cpp
@@ -68,7 +68,7 @@ void block::init_fft(u32 block_size)
 
 #define FFT_BIAS 200
 
-double block::compare(const block &other, float ratio, int fftwack) const {
+double block::compare(const block &other, const search_params &params) const {
     double mfcc_acc=0;
     double fft_acc=0;
 
@@ -77,17 +77,17 @@ double block::compare(const block &other, float ratio, int fftwack) const {
     if (fft_start<0) fft_start=0;
     if (fft_end>m_fft.get_length()) fft_end=m_fft.get_length();
 */
-    s32 fft_start = 0;
-    s32 fft_end = m_fft.get_length();
+    s32 fft_start = params.m_fft1_start;
+    s32 fft_end = fmin(params.m_fft1_end,m_fft.get_length());
 
-    if (ratio==0) {
+    if (params.m_ratio==0) {
         for (u32 i=fft_start; i<fft_end; ++i) {
             fft_acc+=(m_fft[i]-other.m_fft[i]) * (m_fft[i]-other.m_fft[i]);
         }
         return (fft_acc/(float)m_fft.get_length())*FFT_BIAS;
     }
 
-    if (ratio==1) {
+    if (params.m_ratio==1) {
         for (u32 i=0; i<MFCC_FILTERS; ++i) {
             mfcc_acc+=(m_mfcc[i]-other.m_mfcc[i]) * (m_mfcc[i]-other.m_mfcc[i]);
         }
@@ -102,8 +102,8 @@ double block::compare(const block &other, float ratio, int fftwack) const {
         mfcc_acc+=(m_mfcc[i]-other.m_mfcc[i]) * (m_mfcc[i]-other.m_mfcc[i]);
     }
 
-    return (fft_acc/(float)m_fft.get_length())*(1-ratio)*FFT_BIAS +
-        (mfcc_acc/(float)MFCC_FILTERS)*ratio;
+    return (fft_acc/(float)m_fft.get_length())*(1-params.m_ratio)*FFT_BIAS +
+        (mfcc_acc/(float)MFCC_FILTERS)*params.m_ratio;
 }
 
 
@@ -122,10 +122,14 @@ bool block::unit_test() {
     assert(bb.m_rate==44100);
     assert(bb.m_block_size==data.get_length());
 
+    search_params p(0,0,100,0,100);
+
     block bb2("test",data,44100,0);
-    assert(bb.compare(bb2,1,0)==0);
-    assert(bb.compare(bb2,0,0)==0);
-    assert(bb.compare(bb2,0.5,0)==0);
+    assert(bb.compare(bb2,p)==0);
+    p.m_ratio=1;
+    assert(bb.compare(bb2,p)==0);
+    p.m_ratio=0.5;
+    assert(bb.compare(bb2,p)==0);
 
     sample data2(200);
     for (u32 i=0; i<data.get_length(); i++) {
@@ -135,9 +139,11 @@ bool block::unit_test() {
     block cpy("test",data,100,4);
     {
         block bb3("test",data2,44100,4);
-        assert(bb.compare(bb3,1,0)!=0);
-        assert(bb.compare(bb3,0,0)!=0);
-        assert(bb.compare(bb3,0.5,0)!=0);
+        p.m_ratio=0.0;
+        assert(bb.compare(bb3,p)!=0);
+        assert(bb.compare(bb3,p)!=0);
+        p.m_ratio=0.5;
+        assert(bb.compare(bb3,p)!=0);
         cpy=bb3;
     }
 
diff --git a/samplebrain/src/block.h b/samplebrain/src/block.h
index 8a56998..c9af6e0 100644
--- a/samplebrain/src/block.h
+++ b/samplebrain/src/block.h
@@ -3,6 +3,7 @@
 #include "jellyfish/core/types.h"
 #include "fft.h"
 #include "mfcc.h"
+#include "search_params.h"
 
 #ifndef BLOCK
 #define BLOCK
@@ -15,7 +16,7 @@ public:
     block(const std::string &filename, const sample &pcm, u32 rate, u32 env, bool ditchpcm=false);
 
     // returns distance based on ratio of fft-mfcc values
-    double compare(const block &other, float ratio, int fftwack) const;
+    double compare(const block &other, const search_params &params) const;
 
     static void init_fft(u32 block_size);
     static bool unit_test();
diff --git a/samplebrain/src/brain.cpp b/samplebrain/src/brain.cpp
index a2d4cfd..964b4bf 100644
--- a/samplebrain/src/brain.cpp
+++ b/samplebrain/src/brain.cpp
@@ -68,12 +68,12 @@ const block &brain::get_block(u32 index) const {
 }
 
 // returns index to block
-u32 brain::search(const block &target, float ratio, u32 fftwack) const {
+u32 brain::search(const block &target, const search_params &params) const {
     double closest = 999999999;
     u32 closest_index = 0;
     u32 index = 0;
     for (vector<block>::const_iterator i=m_blocks.begin(); i!=m_blocks.end(); ++i) {
-        double diff = target.compare(*i,ratio,fftwack);
+        double diff = target.compare(*i,params);
         if (diff<closest) {
             closest=diff;
             closest_index = index;
@@ -85,7 +85,7 @@ u32 brain::search(const block &target, float ratio, u32 fftwack) const {
 
 // take another brain and rebuild this brain from bits of that one
 // (presumably this one is made from a single sample)
-void brain::resynth(const string &filename, const brain &other, float ratio, u32 fftwack){
+void brain::resynth(const string &filename, const brain &other, const search_params &params){
     sample out((m_block_size-m_overlap)*m_blocks.size());
     out.zero();
     u32 pos = 0;
@@ -95,7 +95,7 @@ void brain::resynth(const string &filename, const brain &other, float ratio, u32
     for (vector<block>::iterator i=m_blocks.begin(); i!=m_blocks.end(); ++i) {
         cerr<<'\r';
         cerr<<"searching: "<<count/float(m_blocks.size())*100;
-        u32 index = other.search(*i,ratio, fftwack);
+        u32 index = other.search(*i, params);
         //cerr<<index<<endl;
         out.mul_mix(other.get_block_pcm(index),pos,0.2);
 
@@ -141,10 +141,13 @@ bool brain::unit_test() {
 
     b2.init(512, 0, 20);
     b3.init(512, 0, 20);
-    assert(b3.search(b2.m_blocks[0],1,0)==0);
-    assert(b3.search(b2.m_blocks[9],1,0)==9);
-    assert(b3.search(b2.m_blocks[19],1,0)==19);
-    assert(b3.search(b2.m_blocks[29],1,0)==29);
+
+    search_params p(1,0,100,0,100);
+
+    assert(b3.search(b2.m_blocks[0],p)==0);
+    assert(b3.search(b2.m_blocks[9],p)==9);
+    assert(b3.search(b2.m_blocks[19],p)==19);
+    assert(b3.search(b2.m_blocks[29],p)==29);
 
 //    sample r = b2.resynth(b,1);
 //    assert(r.get_length()==200);
diff --git a/samplebrain/src/brain.h b/samplebrain/src/brain.h
index 6473343..35dc19c 100644
--- a/samplebrain/src/brain.h
+++ b/samplebrain/src/brain.h
@@ -3,6 +3,7 @@
 #include "jellyfish/core/types.h"
 #include "jellyfish/fluxa/sample.h"
 #include "block.h"
+#include "search_params.h"
 
 #ifndef BRAIN
 #define BRAIN
@@ -21,7 +22,7 @@ public:
     sample load_sound(std::string filename);
     // take another brain and rebuild this brain from bits of that one
     // (presumably this one is made from a single sample)
-    void resynth(const std::string &filename, const brain &other, float ratio, u32 fftwack);
+    void resynth(const std::string &filename, const brain &other, const search_params &params);
 
     const sample &get_block_pcm(u32 index) const;
     const block &get_block(u32 index) const;
@@ -29,7 +30,7 @@ public:
     const u32 get_block_size() const { return m_block_size; }
     const u32 get_overlap() const { return m_overlap; }
 
-    u32 search(const block &target, float ratio, u32 fftwack) const;
+    u32 search(const block &target, const search_params &params) const;
 
     static bool unit_test();
 
diff --git a/samplebrain/src/main.cpp b/samplebrain/src/main.cpp
index ebf10d6..d5ec5d3 100644
--- a/samplebrain/src/main.cpp
+++ b/samplebrain/src/main.cpp
@@ -53,7 +53,7 @@ void run_audio(void* c, unsigned int frames) {
 
 int main(int argc, char *argv[])
 {
-//    unit_test();
+    unit_test();
 
     cerr<<"starting"<<endl;
     brain source, target;
@@ -81,7 +81,7 @@ int main(int argc, char *argv[])
 
     //target.resynth_listen("shosta-dream-0.5.wav",source,0.5,a);
 
-    renderer rr(source,target,1);
+    renderer rr(source,target);
 
 	a->m_client.set_callback(run_audio, &rr);
 
diff --git a/samplebrain/src/renderer.cpp b/samplebrain/src/renderer.cpp
index c63a2a8..bac5b5a 100644
--- a/samplebrain/src/renderer.cpp
+++ b/samplebrain/src/renderer.cpp
@@ -4,27 +4,23 @@
 using namespace spiralcore;
 using namespace std;
 
-void renderer::init(brain &source, brain &target, float ratio) {
+void renderer::init(brain &source, brain &target) {
     m_source=source;
     m_target=target;
     m_render_time=0;
     m_render_blocks.clear();
-    m_ratio = ratio;
 }
 
 static int ratio_time = 0;
 
 void renderer::process(u32 nframes, float *buf) {
+    if (!m_playing) return;
+
     // get blocks from source for the current buffer
     u32 tgt_shift = m_target.get_block_size()-m_target.get_overlap();
     u32 tgt_start = m_render_time/(float)tgt_shift;
     u32 tgt_end = (m_render_time+nframes)/(float)tgt_shift;
 
-    cerr<<'\r';
-    cerr<<m_ratio;
-
-    u32 fftwack = 0; //100*(sin((ratio_time++)*0.01)*0.5+0.5);
-    //m_ratio = 0;
 
     if (tgt_end>=m_target.get_num_blocks()) {
         m_render_time=0;
@@ -40,7 +36,7 @@ void renderer::process(u32 nframes, float *buf) {
     // get indices for current buffer
     for (u32 tgt_index = tgt_start; tgt_index<=tgt_end; tgt_index++) {
         u32 time=tgt_index*tgt_shift;
-        u32 src_index = m_source.search(m_target.get_block(tgt_index), m_ratio, fftwack);
+        u32 src_index = m_source.search(m_target.get_block(tgt_index), m_search_params);
         // put them in the index list
         m_render_blocks.push_back(render_block(src_index,time));
     }
@@ -72,7 +68,7 @@ void renderer::process(u32 nframes, float *buf) {
             u32 block_pos = block_start;
             u32 block_end = pcm.get_length();
             while (block_pos<block_end && buffer_pos<nframes) {
-                buf[buffer_pos]+=pcm[block_pos]*0.2;
+                buf[buffer_pos]+=pcm[block_pos]*0.2*m_volume;
                 ++buffer_pos;
                 ++block_pos;
             }
@@ -100,7 +96,7 @@ bool renderer::unit_test() {
     target.load_sound("test_data/up.wav");
     target.init(10,0,0);
 
-    renderer rr(source,target,1);
+    renderer rr(source,target);
     float *buf=new float[10];
     rr.process(10,buf);
     assert(rr.m_render_blocks.size()==2);
diff --git a/samplebrain/src/renderer.h b/samplebrain/src/renderer.h
index c3603a5..15a0a68 100644
--- a/samplebrain/src/renderer.h
+++ b/samplebrain/src/renderer.h
@@ -9,14 +9,18 @@ namespace spiralcore {
 
 class renderer {
 public:
-    renderer(brain &source, brain &target, float ratio) :
-    m_source(source), m_target(target)
-    { init(source,target,ratio); }
+    renderer(brain &source, brain &target) :
+    m_source(source),
+    m_target(target),
+    m_search_params(0,0,100,0,100)
+    { init(source,target); }
 
-    void init(brain &source, brain &target, float ratio);
+    void init(brain &source, brain &target);
     void process(u32 nframes, float *buf);
 
-    void set_ratio(float s) { m_ratio=s; }
+    void set_playing(bool s) { m_playing=s; }
+    void set_volume(float s) { m_volume=s; }
+    search_params *get_params() { return &m_search_params; }
 
     static bool unit_test();
 
@@ -34,7 +38,10 @@ private:
 
     brain &m_source;
     brain &m_target;
-    float m_ratio;
+
+    search_params m_search_params;
+    float m_volume;
+    bool m_playing;
 
     std::list<render_block> m_render_blocks;
     u32 m_render_time;