virtual uint8_t VolumeUp(bool bWait = true);
virtual uint8_t VolumeDown(bool bWait = true);
virtual uint8_t MuteAudio(bool bWait = true);
virtual uint8_t VolumeUp(bool bWait = true);
virtual uint8_t VolumeDown(bool bWait = true);
virtual uint8_t MuteAudio(bool bWait = true);