I'm looking for a program that can look at my music library and group it up in a coherent way. It would make finding something to listen to so much easier, as genre is often woefully inadequate to reflect listening mood. I know there are some things like that (and iTunes has a feature) but they all miss the mark.

For new stuff, I'm fine with a combination of best of 20## lists, following some interesting soundcloud accounts, and idle searching the internet / various subreddits.