Excellent design. Really, much better than anything I could ever do. My humble attempt at constructive criticism follows.<p>The "play song" overlay is too obtrusive. It feels interruptive, which is what the transparency is trying to avoid. Maybe make the X out button bigger and more prominent?<p>Also, does anyone know if there is a way to kill the Flex initialization and loading bar? It just feels amateur.<p>Finally, the biggest thing I'm looking for in a site like this is the ability to quickly download whole albums? Maybe you should cross-reference the album search with an index of the album, so as to ensure it only downloads one copy of each song, and have a one-button album download feature.<p>Also, isn't it a trivial process to determine which links are still live by seeing if each user plays through the song's entirety?