I found an upgrade disc to 10.6.8 on ebay, and I have the original upgrade snow leopard disc 10.6.0(?) I purchased the first day it came out. Do you think (speculation only) that 10.6.0 will install well enough on a new mac mini so that I could upgrade it to 10.6.8 with the upgrade disc? The only other full version of snow leopard I see on ebay is 10.6.3.
I will have to give Plex a try. Front Row is a mostly known entity to me, and it is a familiar option. I wish Apple didn't abandon it.
I don't think 10.6.0 would install well enough as it wouldn't have adequate drivers (even if it was possible). Therefore, your OS foundation wouldn't be stable.
Like I've said, if it doesn't ship with Snow Leopard - chances are that installing any version of 10.6 (even if possible) wouldn't be stable.
Best bet is to get a refurb of the the old generation (the current ones now) when the new ones debut - as the current Mac minis use Snow Leopard.