have you actually tried running any content though?...

Mac-Mini graphics cards aren't great... A single output is ok (1920x1080) or 2 lower resolution (2x 1024x768) - but much more than this usually results in poor performance.

New unibody Mac-Minis seem to have weird issues with connecting anything (except an LCD) to MDP. HDMI port doesn't support analogue but does seem to work with other DVI/HDMI equipment...

TH2G on a mac-mini isn't recommended...
Will be interesting to see your playback results.

S