Thanks to Greg Luck, I discovered something new in iTunes called My iTunes that lets you export your purchases out as RSS or as a widget to display on your website. Check out a sample of my purchases below – With DRM free music from Amazon, I’m not buying anything from iTunes that’s available on Amazon. By the way, Greg Luck is one of the lead developers of Ehcache, which IMHO is the best and most widely used Java distributed caching framework.
http://phobos.apple.com/WebObjects/MZStoreServices.woa/wa/widget?type=1&sf=143441