Is it possible to mix 5 different audio files into 1 file? Can this be done in Unity? If not directly supported, is there a 3rd party solution for audio mixing?
(for instance… 1 drum track + 1 bass track + 1 guitar track + 1 keyboard track + vocal track = 1 master file).
Thanks!!! 
You can play them at the same time, thats no problem.
But unity does not support any generation of audio files at all at runtime.
Thank you for the reply. Is there a website that includes a list of 3rd party plugins so I can research to see if anyone else has added this capability to Unity? (similar to the mile high list of xtras for Director)
Thanks!!