我也找不到這功能說...
不過根據這篇WMP10應該有看錄下來的電視節目的功能.
http://www.extremetech.com/article2...,1608631,00.asp
Installation of WMP10 looks exactly like WMP9, with just a few tweaks here and there. When you choose to register certain file types with the player, for example, you'll see an option for "Microsoft Recorded TV Show (.dvr-ms)." With a patch, WMP9 can play TV programming recorded from a Windows Media Center Edition PC. WMP10 comes with the functionality already built in.

看起來還必須用Windows MC版才有錄電視的功能.