I guess you can get a Video adapter for this mac mini that would plug into the AUX video input? I'm not sure what the MB Multimedia package supports but even my standard W221 HU supports AUX video (RCA type audio/video interface).
yep, as DB suggests, most newer models have a video input, older models can be retrofitted with an adapter to put video on the LCD. it all depends on what model you have as to how difficult and what resolution you can expect.