Music-streaming service Rhapsody is gobbling up music-related startups today. First music discovery service_Exfm announced it was being acquired and then SoundTracking dropped the news its parent team, Schematic Lab was joining Rhapsody. With today's acquisitions, the 14-year-old streaming music service gets two features that could help the international company grow beyond its 2 million subscribers. Exfm tracks your web traffic to determine what songs you play on various sites and uses that data to surface songs and artists you may like. Apple's Beats Music launched touting its human and computer curated discovery system, but that information is tracked_inside Beats Music....