Rogue music service Grooveshark is attempting to do an end-run around apps that have been pulled from both the iOS App Store and the Android Market by posting a "web app" version of the player in pure HTML5, which should work with most smartphones and tablets as well as most web browsers. In a blog post, the company says it is trying to "reach as many mobile music listeners as we can" but already faces lawsuits from all of the major labels, who accuse the company of illegally misusing rights to the music.