Lame problem Windows Media Center TV recording: problem when pay back on another machine

This seems to be consistant with my experience with Windows 7 Media Center TV Recording before, that TV shows records on one machine (in my case, the Lenovo S12) has problem playing back on my MacMini  Windows 7 side,  Very once in a while I will get Video Error, and can't proceed unless I exit the video, play it again from the beginning, and force to skip that "problem section".  Very annoying.  There goes my dream of recording video on my S12 and then play back from my MacMini.  Sigh.  So the S12 will continue to be the dedicated DVR machine.