"Open source personal video recorder (PVR) software like MythTV has acquired a reputation for being difficult to install and maintain, so you might think that a proprietary PVR app would enjoy an advantage. I put SageTV's Linux media center software through its paces, and I can tell you that it, too, requires commitment. If you stick with it, though, and can outfit your system correctly, it might be worth the $80 price tag, despite a slew of little annoyances.
"SageTV Media Center 5 for Linux is officially tagged an 'OEM Edition'--meaning both that the company expects systems builders to be the primary purchasers, and that Linux users do not get the support services offered to Windows users..."