Most people know that iTunes Match, Apple's latest music-related service that offers to backup and make available whole iTunes libraries online, costs $25 year. While many assume the fee is at least in part a "bribe" to record companies to allow unlimited re-downloading, in fact Apple pays rights holders a fee each time a song is re-downloaded -- and for independent distributors who work with iTunes such as BandCamp, CDBaby and TuneCore, the royalty is a windfall for their artists.