I don't seem to be able to solve an apparently stupid problem. I made a series of mp3 files (for a .mov presentation) with garage band and then saved the files in itunes. Everything is good, but once in itunes, the mp3 files become automatically three seconds longer than the original ones made with garageband. I tried to look for settings, preferences, etc. in itunes without success. Aargh. Anybody knows how to fix this problem?? Thanks in advance.