I have installed MythDora 4.0 with a card LeadTek WinTV 2000. The card is detected correctly by MythDora and it works properly when I connect the line out of the card in the line in of the soudn card of the computer. When I watch TV I have sound but when I close the program or when I change option in MythTV (like wathching a DVD) I always the sound of the TV.(with DVD the sound of the DVD is added to the sound of the TV). The only way to stop sound is to close the line in channel. Are they a other solution?