Gearheads of War

The entire Rock Band track list, aside from 3 songs (listed at the bottom) will be able to be saved to your hard drive for a meager 5 dollars. This will be in effect from day one of launch. So just about all the songs from the original and your DLC will be compatible with RB2. Frickin' awesome.

The three songs that we won't be able to play:

• "Paranoid" as made famous by Black Sabbath (Cover)
  
• "Run to the Hills" as made famous by Iron Maiden (Cover)
  
• "Enter Sandman" by Metallica

They shall be missed. But that's still pretty damn good. 55 songs for 5 bucks. w00t!

Sources:
http://kotaku.com/5039837/how-to-get-your-rock-band-1-songs-into-rock-band-2

http://www.shacknews.com/onearticle.x/54573

http://www.rockband.com/forums/showthread.php?t=76923