Please point your music player here.

The Libre.fm wiki has a good list of players that can be configured to support GNU FM servers, such as this one.

Adding this information to your computer's hosts file often helps if you're totally stuck:

213.138.110.197 post.audioscrobbler.com

(We are not Audioscrobbler, but we can do most of the same server functions.)

Where's my hosts file?.