I signed up at
Last.fm in 2005. I never really used it a lot. Until recently, when I got slightly bored by
soma.fm (still great though!). I found out Last.fm is streaming tons of music. A bit like pandora.com, but way better. And it seems they have
everything, ranging from Aphex Twin, to the Beatles, your local punk band, Ravi Shankar, Stockhausen, anything.
It can give you recommendations, or you listen to a tag radio (try gypsy, 303, amsterdam, whatever).