Soundcloud has a nice culture. I go there both to discover music and to listen to music I've liked. It's different than imgur but I think that partly is just due to the fact that it takes anywhere from 3 minutes to an hour to experience each 'piece' compared to an image which you can digest in a few seconds and flip through a bunch when you need to burn a minute or two.

debatable. soundcloud has community as well, you just might not have gotten into it yet if you simply get linked or listen to stuff from the embedded player.