I-pod touch

[heftysmokes]

You can keep your mp3 formatted music and still play it in itunes. It should give you the choice after installing itunes whether or not you'd like to convert to the aac format.
One thing to keep in mind: after itunes is installed, when you put a new cd into your computer to import into itunes, it will automatically import it in the aac format. This doesn't seem like a big deal, but if in the future, you ever decide to switch to a different brand of music player, they will more than likely not play when in aac format.

[cigar no baka]

You can keep your mp3 formatted music and still play it in itunes. It should give you the choice after installing itunes whether or not you'd like to convert to the aac format.
One thing to keep in mind: after itunes is installed, when you put a new cd into your computer to import into itunes, it will automatically import it in the aac format. This doesn't seem like a big deal, but if in the future, you ever decide to switch to a different brand of music player, they will more than likely not play when in aac format.

Well, I have chosen Windows Media Player as my default, and when I insert a CD into my PC, it still comes up with WMP evenafter I installed itunes. I think I chose the right option when installing itunes to make sure it was not the default player.