diff --git a/vrplayer/mainwindow.cpp b/vrplayer/mainwindow.cpp
index 4c8ea2b1..1782f710 100644
--- a/vrplayer/mainwindow.cpp
+++ b/vrplayer/mainwindow.cpp
@@ -132,8 +132,22 @@ void MainWindow::moveEvent(QMoveEvent *)
     moveResizeTimer->start(1000);
 }
 
+void MainWindow::onVolSliderValueChanged(int value)
+{
+    int volume;
+    
+    volume = (value * 0xffff) / 100;
+    if (interface != 0)
+    {
+        interface->setVolume(volume);
+    }
+    qDebug() << "vol = " << volume;
+}
+
 void MainWindow::setupUI()
 {
+    this->setWindowTitle("vrplayer");
+
     /* setup area to display video */
     lblVideo = new QLabel();
     lblVideo->setMinimumWidth(320);
@@ -198,10 +212,26 @@ void MainWindow::setupUI()
     connect(btnRewind, SIGNAL(clicked(bool)),
             this, SLOT(onBtnRewindClicked(bool)));
 
+    /* setup volume control slider */
+    volSlider = new QSlider();
+    volSlider->setOrientation(Qt::Horizontal);
+    volSlider->setMinimumWidth(100);
+    volSlider->setMaximumWidth(100);
+    volSlider->setMinimum(0);
+    volSlider->setMaximum(100);
+    volSlider->setValue(20);
+    volSlider->setTickPosition(QSlider::TicksAbove);
+    volSlider->setTickInterval(10);
+
+    connect(volSlider, SIGNAL(valueChanged(int)),
+            this, SLOT(onVolSliderValueChanged(int)));
+
     /* add buttons to bottom panel */
     hboxLayoutBottom = new QHBoxLayout;
     hboxLayoutBottom->addWidget(btnPlay);
     hboxLayoutBottom->addWidget(btnStop);
+    hboxLayoutBottom->addWidget(volSlider);
+
     //hboxLayoutBottom->addWidget(btnRewind);
     hboxLayoutBottom->addStretch();
 
@@ -482,14 +512,21 @@ void MainWindow::onMoveCompleted()
 
     interface->setVcrOp(VCR_PLAY);
     vcrFlag = VCR_PLAY;
+    moveResizeTimer->stop();
 }
 
 void MainWindow::on_actionAbout_triggered()
 {
+#if 0
     QMessageBox msgBox;
 
     msgBox.setText("VRPlayer version 1.2");
     msgBox.setStandardButtons(QMessageBox::Ok);
     msgBox.setDefaultButton(QMessageBox::Ok);
     msgBox.exec();
+#else
+    DlgAbout *dlgabt = new DlgAbout(this);
+    dlgabt->exec();
+
+#endif
 }
diff --git a/vrplayer/mainwindow.h b/vrplayer/mainwindow.h
index 50663408..4fef0d60 100644
--- a/vrplayer/mainwindow.h
+++ b/vrplayer/mainwindow.h
@@ -33,6 +33,7 @@
 #include "decoder.h"
 #include "ourinterface.h"
 #include "playvideo.h"
+#include "dlgabout.h"
 
 /* ffmpeg related stuff */
 extern "C"
@@ -81,6 +82,8 @@ private slots:
 
     void on_actionAbout_triggered();
 
+    void onVolSliderValueChanged(int value);
+
 protected:
     void resizeEvent(QResizeEvent *e);
     void closeEvent(QCloseEvent *e);
@@ -101,6 +104,7 @@ private:
     QPushButton   *btnStop;
     QPushButton   *btnRewind;
     QSlider       *slider;
+    QSlider       *volSlider;
     QWidget       *window;
     bool           acceptSliderMove;
     QTimer        *moveResizeTimer;
diff --git a/vrplayer/ourinterface.cpp b/vrplayer/ourinterface.cpp
index 094a84f7..cee66691 100644
--- a/vrplayer/ourinterface.cpp
+++ b/vrplayer/ourinterface.cpp
@@ -215,3 +215,15 @@ void OurInterface::setVcrOp(int op)
     if (demuxMedia)
         demuxMedia->setVcrOp(op);
 }
+
+int OurInterface::setVolume(int volume)
+{
+    printf("OurInterface::setVolume\n");
+    if (xrdpvr_set_volume(channel, volume))
+    {
+        emit on_ErrorMsg("I/O Error",
+                         "Error sending volume to remote client");
+        return -1;
+    }
+    return 0;
+}
diff --git a/vrplayer/ourinterface.h b/vrplayer/ourinterface.h
index ea402048..86352001 100644
--- a/vrplayer/ourinterface.h
+++ b/vrplayer/ourinterface.h
@@ -42,6 +42,7 @@ public:
     void playMedia();
     PlayVideo *getPlayVideoInstance();
     void setVcrOp(int op);
+    int setVolume(int volume);
 
 public slots:
     void onGeometryChanged(int x, int y, int width, int height);
diff --git a/vrplayer/vrplayer.pro b/vrplayer/vrplayer.pro
index a6e53231..1708a7f4 100644
--- a/vrplayer/vrplayer.pro
+++ b/vrplayer/vrplayer.pro
@@ -16,16 +16,19 @@ SOURCES += main.cpp\
     mediapacket.cpp \
     playaudio.cpp \
     demuxmedia.cpp \
-    ourinterface.cpp
+    ourinterface.cpp \
+    dlgabout.cpp
 
 HEADERS  += mainwindow.h \
     mediapacket.h \
     playvideo.h \
     playaudio.h \
     demuxmedia.h \
-    ourinterface.h
+    ourinterface.h \
+    dlgabout.h
 
-FORMS    += mainwindow.ui
+FORMS    += mainwindow.ui \
+    dlgabout.ui
 
 # added by LK
 INCLUDEPATH += ../xrdpvr