Well, nice sharing, thanks!
Would have a try when I at home, and would like to get more useful tips&experiences, though I have got some from ifunia iPad column on video playing, that's not enough!
Well, I think there arenot too much difference between AIFF and WAV, at least on my Mac, and I also use iTunes.
But I used to use AIFF, usually convert the files to AIFF.