MTV is preparing to unveil its music-sharing service Urge, a joint venture with Microsoft that is expected to give Apple’s iTunes a run for its money. Urge is expected to not only sell music for download, but also create an environment for users to discover new music. It will also offer unique content from MTV and its sister cable networks. Users will have the option of subscribing to Urge, or buying songs individually.http://news.com.com/MTV%2C+Microsoft+band+together+for+music+service/2100-1027_3-5993125.html