Electronic Arts’ Rock Band isn’t even out yet, but its competition with Activision’s Guitar Hero III is already heating up, reports The Associated Press. The battleground is the Internet, where you’ll be able to buy fresh new songs for either game. Just a few weeks after the release of GHIII, Activision has already delivered two extra three-song packs featuring the Foo Fighters and Velvet Revolver. A few days later, however, the Associated Press learned that Rock Band will be offering downloadable tunes from a much broader range of acts, including the Police, David Bowie and Radiohead. Rock on!