At least you have the option to upgrade to the tracks they do have on “iTunes Plus” for a small fee. However most of iTunes’ catalogue is still only available as low quality DRM’ed tracks… Yuck!
I had already gotten rid of the DRM but audio quality is noticeably lacking after listening to 256 kbps tracks from Amazon MP3. I’ve read 256 kbps isn’t distinguishable from CD quality to the human ear.
So now I’m “upgrading” my favorite albums by re-purchasing them on Amazon MP3 and buying CDs (trying to stick to used) to rip at 256 kbps.
This is an example of why, (in a perfect world) you should be able to buy the personal use rights to the media and be able to download the song whenever you wanted in whatever format you wanted for free.