I've browsed through Amazon's free downloads section previously, I think I even tried to get their interface a couple years ago, but it required some huge download from Microsoft that I didn't feel like installing at the time (possibly .net 3.0?).

It may be worth checking out their MP3 downloader again for some of the free stuff that's there now. I'd imagine by now they've got the kinks worked out...

Or maybe I'll just stick with whatever's free in iTunes this week, to avoid downloading more software.