If you are lucky enough to be in New York City this weekend, you should not miss out on the WFMU Record + CD Fair to meet lots of nerdy hippies, enjoy the films and live performances, and drop all your cash on obscure audio.
If you are still looking for ideas how to spend money and complement your record collection, there are always lots of DJs to help you out with recommendations. I have recently been obsessed with British DJ and producer Andrew Shallcross aka Andy Votel (supposedly V.O.T.E.L. stands for "Violators of the English Language", Andy's old hip-hop crew), who is involved with B-Music and the Twisted Nerve, Finders Keepers, and Delay 68 labels.
Apart from reissuing good stuff on his labels and curating various compilations of weird Folk, Prog, and Welsh music, he has also released his own mixes. Whereas other DJs treat their samples as classified information, you can read his notes and view the covers of all 76 records he used in his mix Music to Watch Girls Cry. And last year's Vertigo Mixed (which finally made Prog accessible to people with ADD) comes with a pretty long track listing, too.
Just as an example what you can find once you dive into it, listen to this over-the-top Hungarian funky Prog version of Rhapsody in Blue: Skorpio - Fantazia (mp3).