We wrap whatever DVR is selected during the setup process. We support both MythTV and VDR currently, with the possibility of integrating others in the future. You can then control MythTV using our distributed UI system, Orbiter. Which is a house-wide UI that is retargetable to a huge number of devices, such as the on-screen TV displays, touch screen tablets, PDAs, MIDs, web devices, IP telephones, and mobile phones.
-Thom