I recently came across Console.fm. A great little project to organize streams from Soundcloud into genres with a little social layer on top (chat). I was interested on how the site worked, so i dug a little deeper only to find out the tracks are widely available to download through a little hack.

Note: The following steps are written for Google Chrome, but it should work in other browsers with Inspector-like functionality (Firefox + Firebug, IE Dev Tools, etc.).

1. Browser to Console.fm and login with your Twitter account. 
2. Select a Genre.
3. Right-click on a track in the list. Click 'Inspect Element'.
   
4. Once the Dev Tools console pops up from the bottom, you can clearly see the stream link from SoundCloud.
   
5. Right-click it and click 'Open Link in New Tab'. 
   
   I 
6. In the new tab, you'll be presented with an embedded audio file. Pause it. Right-click and click 'Save Video As'.
   
7. Name the MP3 whatever you'd like.