I've got my iMac and would love to be able to use it like a TiVo machine, but 1.) programs like Freevo, MythTV do not have Mac versions accessible and 2.) require a TV tuner card that I don't have. Is there any program out there that can do this? I've heard reference to Elgato/EyeTV, but don't want to spend any money at all - this is more idle curiosity that might come in handy, I don't watch enough TV to spend the money on TiVo or Elgato.