I am thinking I need to convert back to mp3 files. Is there any advantage to keeping them aac? 99.9% of my music is not gotten from the itunes store so its not protected...just converted. Actually now that I think about it most of the music I have that I have not imported yet is in mp3 format still. I am just getting into the no CD thing and having it on a ipod and such. When its all said and done ill have probably 150 gigs of music. I might just get a program to convert anything back to MP3's and I still will be able to use itunes and the ipod and dock a 120gig ipod in my car and let my denon grab the mp3 files from the computer. Its just kinda slow going through the denon....