[audio] Allows playback of both MP3 or WAV files, as long as the needed player (mpg123 or aplay) is installed
[audio] Allows playback of both MP3 or WAV files, as long as the needed player (mpg123 or aplay) is installed

Signed-off-by: deadprogram <b937b287f61b7a223d4aac55072db1a5381d3bb3@hybridgroup.com>

nzmichaelh/gobot,nzmichaelh/gobot