4. It Takes over your music library converts everything it can to M4A (Just WMA Files)
That's an easy setting to change. Right in the importing options you can set it to MP3 or WMA or anything else you may want to use. The only crappy thing is when you buy from the store it's always in M4A. Usually I just buy whole albums and burn them to a CD and import them again as MP3 unless I happen to get a non-protected one from the store (yet to happen) then I can just right-click and convert.