The Rdio application for OSX is insane. I have only opened iTunes to play some songs Rdio doesn't have yet (Thursday, Man Orch, you know ...) but beyond that: I'm in love. If they ever put in an option to merge my computer tunes with this -- it will be the only program I'd need for music. Hell, it would be such a killer app I'd buy other products (Roku, sonos, etc.) just so I could use Rdio. Ok, how do I invest in these guys? Get the app here.
I'm working on search stuff on the new AP.net today. I've got it working about 300% faster than before, and only need to fix up a few more small things before I can cross it off my list.