Rovi, formerly Macrovision (NSDQ: MVSN), has acquired a small content personalization and recommendation software firm, MediaUnbound, for an undisclosed sum. MU was founded in 2000 by Harvard undergraduates and its clients have included Napster, MTV, NTT DoCoMo and HMV (LSE: HMV). Rovi owns All Media Guide and of course its IPG service, and this new acquisition could help refine and add to those media services. MU has focused on music till now, but could be extended to other kinds of media as well. Some more info from NTV, here.