I don’t, at least I’m not making an active effort. Why would I? I already have enough music to generate playlists that could last for years. That’s more than enough music.
Apart from that there’s the usual cultural osmosis that can’t be avoided. A song that is used in a movie, plays on a radio/car stereo or at an event somewhere and you like it. Bam, discovery!
Are there any obvious fire-and-forget solutions to hosting IRC servers for friends? With Mumble it’s a simple sudo apt-get and you have your voice chat running, but at a first glance IRC seems to be a bit more involved, surprisingly so.