Bands love MySpace because of how easy the format is to promote your gig and post samples of songs.
But the people you want to reach are on Facebook!
Solution: RootMusic. It's a free tool that uses Facebook Connect to add a well-designed tab to your band's Fan page (and it must be a Fan page and not a personal page) that lets you easily post songs and show dates. It will also showcase your most recent posts on Twitter.
You can have the songs be downloaded or streamed. Just do all the updating from RootMusic's site, and it'll show up on Facebook as a tab that says "BandPage." Rock on.