Tried playing a file in omxplayer. Didn't have one ready so I made a quick recording in sonic pi using this: 2.times do play_pattern [40,25,45,25,25,50,50] play_pattern [40,25,45,25,25,50,50].reverse end Then used "omxplayer /home/pi/Desktop/my-recording.wav" Still no sound. Tried changing the sound...