Best Buy has unveiled the Best Buy Digital Music Store, a new service that will give customers an easy way to enjoy, manage, and discover music. The new service is powered by the RealNetworks’ Rhapsody 4.0 music service, and features both a permanent download store and a subscription download service. As part of this launch, Best Buy also will carry and promote the SanDisk Sansa e200R Rhapsody MP3 players, which have been optimized to work seamlessly with the Best Buy Digital Music Store. The Best Buy Digital Music Store and the Sansa e200R Rhapsody MP3 players will both be available at participating Best Buy stores as of Sunday, October 15th.