Yea, I understand the situation.
I think iTunes would be the best. It's simple to remove the DRM from them to transfer them to MP3 files. If you have a CD-RW disc it's pretty easy. In iTunes you burn your album to a CD, then re-import it as an MP3 file. There are some programs floating around that do the same thing.
iTunes uses AAC files, which can only be played from iTunes. If you try to transfer the actual files to another computer, you need to enter the username and password used to buy those songs in order to play them.
Personally, I had bought a collection of iTunes albums a few years ago...pre-axioms. Over the years i've found friends with the CD's and just ripped them so I'd have a lossless copy of my iTunes music. Currently, I could care less about DRM...I bought the music, so it's mine.
