MediaTV Pro is supported by Windows and Linux
We will also provide MacOSX software for Sundtek MediaTV Gold (the mediacenter is currently under development and shall be released within 2-4 weeks for it, the driver is completed already).
The current MythTV Status is that DVB-C and DVB-T is supported, AnalogTV is in progress, shall be completed within the next few days and released around next week after testing. We put alot effort into testing.
Although we currently recommend linux VDR (possibly XBox Mediacenter with VDR) for DVB-T/DVB-C with our device since it is very well supported.
For analog TV we recommend tvtime.
The MythTV analog TV support is poor since MythTV reencodes the video and the quality significantly drops down due bad compression, due the asynchronity of the backend/frontend MythTV implementation analog TV tuning also takes much longer than with tvtime.