http://wdsrradio.com/itunes-music-promotion - Experts predict that it will not be long before iTunes begins to sell more songs and music albums than physical music stores. One advantage of such virtual music providers is that there is no longer a need for warehouses to stock music CDs. The MP3 file can be stored on a server and endlessly replicated. In addition to free or cheap music downloads, this site also enables effective song promotion.