I was referring to the windows xp media center and the tivo home media option not mythTV I know almost nothing about mythtv.

I did find this program http://www.musicex.com/mediacenter/
it has insert and append and it offers a full screen interface that would work good with a tv and a remote. The full screen interface is kinda crappy right now but it is xml so I could potentially make my own (I think I would have a better shot at that then getting mythtv to work anyway)