From information from the National Association of Broadcasters, a legal battle has been brewing between radio broadcasters and a company named Mission Abstract Data LLC, (doing business as DigiMedia). DigiMedia claims to have patents on a method and system for operating radio stations using a computer hard drives with a digital database of stored music that is programmed, played and broadcast. Radio broadcasters have been quite vocal to this challenge, saying that they have been playing music at stations off an up-and-running hard drive since the early-1990s, reports the US Radio Magazine.