Church Music RIA

While browsing over at Dan Dura's blog I found this cool link to the LDS Church Music site. Be sure to check out the music player, this is one of the best web applications I've ever seen. I'd like to incorporate some of this stuff into xChange as I build it.. and seeing this makes me think that I have a long way to go! I'd really like to know who designed this site, so if you have any idea - drop me a line or comment.