void ScanDisc(GtkWidget *widget,gpointer data);
void UpdateDisplay(GripInfo *ginfo);
void UpdateTracks(GripInfo *ginfo);
void ScanDisc(GtkWidget *widget,gpointer data);
void UpdateDisplay(GripInfo *ginfo);
void UpdateTracks(GripInfo *ginfo);
void PlayTrackCB(GtkWidget *widget,gpointer data);
void StopPlayCB(GtkWidget *widget,gpointer data);
void PlayTrackCB(GtkWidget *widget,gpointer data);
void StopPlayCB(GtkWidget *widget,gpointer data);