I want to play a movie with 3 channels of audio and output them with a Motu ultralite. I noticed that all movies I tried even stereo audio out of the mbp speakers didn't work, just replacing the movie url in the example play movie with sound. So firstly, what are the supported audio formats? Are there any supported formats that will give me 3 channels? And secondly, will I be able to output this through a Motu USB device?