We've recently changed from BandSoup to UndergroundMusic.fm. The site is still free to use as a listener and artist. You can easily play songs and save them to your favorites by logging in with your email or Facebook. You can play the site like a radio (leave the browser open) and build your favorites like an on-going playlist. Check it out! All bands (any genre) and listeners welcome.
We also blog: http://blog.undergroundmusic.fm/