Volume control by mpd
Volume control by mpd

Volume control is now done by mpd. As a Audio-Interface setting has to be done in mpd.conf, we don't need a Audio_iFace_Name file anymore to avoid setting the same thing twice at different places.
MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID,MiczFlor/RPi-Jukebox-RFID