--- a/src/pngplayer.cpp	Wed Mar 25 14:23:46 2015 +0100
+++ b/src/pngplayer.cpp	Wed Mar 25 14:24:38 2015 +0100
@@ -13,11 +13,15 @@
 #include <QPushButton>
 #include <QHBoxLayout>
 #include <QSlider>
+#include <QSettings>
 
 #include <QDebug>
 
 PNGPlayer::PNGPlayer(QWidget *parent, Qt::WindowFlags f) : QWidget(parent, f) {
     setupGUI();
+    QSettings settings;
+    mSpeedSlider->setValue(settings.value(REPLAY_SPEED_KEY, REPLAY_SPEED_DEFAULT).toInt());
+    speedChanged();
 }
 
 void PNGPlayer::setupGUI() {
@@ -64,10 +68,14 @@
     speedArea->addWidget(speedLabel);
 
     mSpeedSlider = new QSlider(Qt::Horizontal);
-    mSpeedSlider->setMaximum(10000);
-    mSpeedSlider->setTickInterval(500);
+    mSpeedSlider->setMaximum(10);
+    mSpeedSlider->setTickInterval(1);
     mSpeedSlider->setTickPosition(QSlider::TicksBelow);
+    mSpeedSlider->setTracking(false);
+    mSpeedSlider->setInvertedAppearance(true);
+
     speedArea->addWidget(mSpeedSlider);
+    connect(mSpeedSlider, &QSlider::valueChanged, this, &PNGPlayer::speedChanged);
 
     mCurSpeedLabel = new QLabel;
     speedArea->addWidget(mCurSpeedLabel);
@@ -117,12 +125,11 @@
 void PNGPlayer::setSpeed(int mSecsPerPicture) {
     if (mSecsPerPicture == 1000) {
         mCurSpeedLabel->setText(tr("%1 second per Picture").
-                                arg(mSecsPerPicture / 1000));
+                                arg(mSecsPerPicture / 1000.));
     } else {
         mCurSpeedLabel->setText(tr("%1 seconds per Picture").
-                                arg(mSecsPerPicture / 1000));
+                                arg(mSecsPerPicture / 1000.));
     }
-    mSpeedSlider->setValue(mSecsPerPicture);
     mAdvanceTimer.setInterval(mSecsPerPicture);
 }
 
@@ -162,3 +169,13 @@
 void PNGPlayer::lastClicked() {
     emit jumpToFrame(mMax);
 }
+
+void PNGPlayer::speedChanged() {
+    if (mSpeedSlider->value()) {
+        setSpeed(mSpeedSlider->value() * REPLAY_SPEED_STEP_MS);
+    } else {
+        setSpeed(REPLAY_SPEED_STEP_MS / 2);
+    }
+    QSettings settings;
+    settings.setValue(REPLAY_SPEED_KEY, mSpeedSlider->value());
+}