Late, but definitely in the game now, Sameach Music has launched their online store at JewishJukebox.com. Following up on their Podcast, Sameach appears to be adopting a net-savvy marketing approach. It's a smart approach, and reduces their reliance on Judaica retailers in the NY area, who are notorious for late payments (when they pay at all), as needed distribution outlets. They're also offering a free CD including tracks by many of their artists with purchases of $25 or more.
PT posts video of the MSB backing up Shlock Rock on Yo, Yo, Yarmulka.