I downloaded a few albums from itunes today. i thought most stuff up there was now standard mp3 and not silly proprietary formats. alas the albums are in m4a format, and thus unreadable by a 3rd party application i use to slow down the tunes so i can learn them easier. How do i ensure that i am downloading only standard mp3s from itunes? i cant find a menu setting, and i cant find a column to show me the format of the song im downloading.