mythtv

mythtv is a powerful program suite you can use to build a PVR. I have used it for a while now and I have'nt found any softare that meets my requirements.
My requirements is:

• I want one place for all my data on one hardware platform
• Multimedia recordings shall not depend on a single client machine that scheduling the recordings, I want that the server handle all recordings for me.
• I wan't small silent clients accessing the server