I have been using the HDHomeRun on my setup for several months. SageTV works with the HDHR using a network tuner 'handshake'. The beta bda driver currently works with MCE, MediaPortal and GBPVR. It will take a week or so to formally finalize. I am currently watching TV using a HDHomeRun with BeyondTV A forum post by Nick in the driver beta thread announced the following information on Sunday (3/18) evening:

With the assistance of Snapstream, he seems to have solved the problem.

Nick - from SiliconDust has been attempting to get the HDHR bda driver to work with Beyond TV, but was running into errors. This would allow Beyond TV users to tune unencrypted QAM and ATSC channels with the HDHR just like with any supported BTV tuner card. They are currently working on the beta version of a Windows BDA driver for the HDHR device. Silicon Dust is the maker of the HDHomeRun dual, ATSC/QAM tuner.

Support is coming soon - possibly as soon as next week. THE HDHOMERUN IS NOW OFFICIALLY SUPPORTED BY BEYONDTVĪccording to the SiliconDust forums (home of the HDHomeRun Tuner), native Beyond TV

Hdhomerun mediaportal qam