I was looking for a cheap and easy way to connect my seconday TV to my MythTV media center.
The Hauppauge MediaMVP combined with the “MediaMVP Media Center” open source application from www.mvpmc.org looked like it supported all my requirements:
- It is noiseless and small
- It supports output to SCART
- It can be hacked to act as a MythTV frontend.
From the HOWTO’s on the MediaMVP Media Center it also looked like it was very easy to get working. That, however it was not. 
I now have a somewhat working setup where I can watch recorded shows, but not really anything else. Which is OK for now.
My problem was that the new versions of the Hauppauge MediaMVP dosn’t just boot via tftp. Here is what I had to do to make it boot the MediaMVP Media Center software:
On my DHCP server I added the following group:
group {
host mvp { # NOTE: Change the hardware ethernet to the MAC address of your actual MVP
hardware ethernet 00:0d:fe:0b:b3:fc;
fixed-address 192.168.1.3;
}
}
This will just assign a static IP to the box. No need to set TFTP server, filename etc here since it will just ignore it anyway.
To boot the application you must be a tftp server on port 16869 (use dpkg-reconfigure atftp to reconfigure atftp to run on this port) and you must run the mvprelay application from the MVPServer package. For example:
./mvprelay 16881 5906 6337 192.168.1.2
In your /tftpboot directory the files must be called dongle.bin, dongle.bin.config and dongle.bin.ver. You cannot set other filenames in the DHCP server configuration or the relay application…
So far my box only fetches the application and not the config file, so I have to telnet to it, kill the running application and execute the commands from dongle.bin.config…..