I'm assuming that this is a dupe request but I've searched and I'm not finding anything.
Anyhow, on the Music Explorer -> More Albums... section it would be excellent if there were other digital MP3 store links instead of just iTunes. In my case specifically, I would love to see a link next to the iTunes logo/link for Amazon that took me right to the Amazon digital version (since that's where I purchase all of my MP3s these days). I love being able to browse the catalogs this way, but having the extra level of convenience would be MUCH appreciated.