Play music files from the specified SD card directory.
If Audio Only is selected, only files with the following extensions will be played: 3gp, mp3, wma, au, mid, midi, mp2, ogg, wav.
If Random is selected, files will be played in random order.
You can stop the playback before it is finished with the Stop Music action.
Doing the same action on the same directory will move playback to the next file. If you want to start afresh, use Music Stop first.
See also: variable Music Track.