Not exactly sure what the problem is, and it's not quite the EU problem mentioned elsewhere.
At least 1 song in LRB or my DLC doesn't play correctly. The sound goes out, and after a few seconds, the video nearly freezes. Not completely, but a frame every few seconds or so. Now, the system still works durring this time, as the PS button responds, as does pause (where I can restart the song, with identical results). It never gets far enough to tell me the name(s?) of the song(s?) involved, so I'm not sure what song it is yet.
When I have more time, I'll start testing out songs. I believe I've played every on disc song, and I know every song I have as DLC has worked before in RB2, so I'm not sure if it's a PS3 game issue, an HD issue, or simply a corrupted file issue.
Has anyone else had a problem like this?