I might get a gig making a 30 sec spot to be shown in theaters for a local business. I've got experience working with the video format they are asking for but haven't done any audio to meet the 5.1 surround sound requirement. If I get some audio from a stock house, how do I convert it to 5.1? I'll be using AE CC and I have Audition CC, So far I'm only looking at music and no narration, maybe some sound effects.