(Yet another) Media Closet Venting Thread

Sorry, I've been reading all the other posts but I'm getting more and more confused. I'm starting a new house build in a few weeks and am trying to figure out the best way (at a moderate price, not low ball and not nuts, in the middle) to cool my media closet. It will be in the basement, and I designed it to be 4x4, a door on either side. It will have a lot of equipment, probably too much. 3 desktops (HTPC, mine and my wife's which are set up as stations in areas of the house), Xbox as an extender, receiver, router, modem, probably another couple odds and ends.

So my thinking is a vent in the bottom to let air in, and an exhaust in the top to pull out. Questions would be:
1 - Can anyone recommend a fan size\brand the is extremely quiet (since it would be right under the floor of the main room of the house) and a thermostat that isn't going to cause any spikes or anything clicking on and off?
2 - Is there any kind of intakes with filters to keep dust out?
3 - Should I just vent it to a room? It would be vented into the laundry room but I was worried about it getting too hot in there, and maybe throwing off my normal house temps.
4 - Any way to further soundproof the fan?
5 - Any other suggestions so I do it right the first time? Something better than a plain intake vent? Am I looking at this all wrong?

Thanks for any input, it's really appreciated!

Thanks for the reply. Actually, I won't have a dedicated HT, the HTPC just routes to the two TVs upstairs (main one above the media closet). I just figured with it up high on the wall in the basement, you'd hear it through the floor above.

Thanks again for the tips. Could anyone suggest a Panasonic model? I've been looking and can't even guess which is too small or too big. Also, what would be a good thermostat to go with it that won't cause any flux from the clicking on\off? I'm so lost with the stuff it's probably just easier to tell me what to buy!

I've been reading up. Would the Panasonic Whisperline 120 be a good choice? Too big or too small? Just checking before I order. If so, what would be a good thermostat to pair it with?

Thanks. I thought you had to get a specific kind of thermostat to avoid it 'clicking' or surging the power when it kicks on and off. I can't seem to find any info on the sones of the Fantech. Is it quiet?

I actually had looked at that one, but was afraid it would not be enough to cool everything I had crammed in there. Or am I thinking too big going with something like a Panasonic fan?