Sunnyvale, Calif. - Yahoo (NASD: YHOO) announced on Monday that it will dump its Yahoo Music Unlimited digital music service, and replace it with Rhapsody, the competing on-demand streaming service offered by Rhapsody America, a joint venture between RealNetworks (NASD: RNWK) and Viacom's (NYSE: VIA) MTV Networks. Yahoo and Rhapsody also intend to collaborate on other digital music services, such as music downloads.