It may not be as big as Guitar Hero, but Rock Band does pretty well, with over 3 million bundle units sold so far. As most of you may already know, the PlayStation 2 and Nintendo Wii’s lack of storage prevented users from downloading songs online.

But there is nothing to worry about! There is a way, as Harmonix, together with MTV Games and EA unveiled this week: “Rock Band Track Pack Volume 1,” which will become available starting July 15 for $29.99.

The disk will include 20 songs, which were normally available as individual downloads for PS3 and Xbox users, for $1.99 per song.

The complete list is as follows: 30 Seconds to Mars – The Kill; All American Rejects – Move Along; Blink 182 – All the Small Things; Boston – More Than a Feeling; David Bowie – Moonage Daydream; Faith No More – We Care A Lot; Grateful Dead – Truckin’; The Hives – Die, All Right!; KISS – Calling Dr. Love; Lynyrd Skynyrd – Gimme’ Three Steps; Nine Inch Nails – March of the Pigs; Oasis – Live Forever; Paramore – Crushcrushcrush; The Police – Synchronicity II; Queens of the Stone Age – Little Sister; Ramones – Teenage Lobotomy; Smashing Pumpkins – Siva; Stone Temple Pilots – Interstate Love Song; Weezer – Buddy Holly; Wolfmother – Joker & the Thief.

“Rock Band is the ultimate platform for music fans and gamers to interact with music like never before,” Harmonix said in a blog. “The game challenges players to put together a band and tour for fame and fortune – all while learning to master lead/bass guitar, drums and vocals.”

The game has already won over 40 awards, including Game Critics Award: Best of Show E3 2007, Outstanding Innovation in Gaming, Family Game of the Year, and Outstanding Achievement in Soundtrack.

Philippe Dauman, Viacom President and CEO, told GameDaily: “our Rock Band video game is continuing its successful tour and is emerging as a valuable long term franchise,” adding that they expect even greater success as they prepare for the release of Rock Band on Wii and the European launch.