Rock Band and Guitar Hero

I wonder if many artists and/or record labels are missing a huge opportunity with video games and music? I'm not talking just about the price of these downloads (usually 160 MS points, or about $2). I'm talking about bundling the rights.

So instead of only being able to play the music in Rock Band, but also take it to your iPod or your Zune or your computer. In other words, pay $x and get portability.

I'm also curious as to why bands/labels aren't lining up to get their music on the game. Maybe they are, but there's a lot of room for improvement. I'm really surprised that the Rolling Stones aren't on Rock Band (save for one song). Here's the chance to hook new listeners into your music and make money doing it.

I also wonder why new music releases aren't multimedia releases. Okay, maybe that has to do with the games needing the master tracks, so what about a delay of a week. But why not simultaneous? What's the fear? That it will leak out onto the internet? How would they get it into the game?

I think it's all a missed opportunity.