Sometimes they are stuck as a dinosaur in a tar pit.
So here's the deal. Some projectors have players built in. So do not get stuck on "This shall be a .MOV file." Go with what works.
As to the DLP, must it be DLP or can it be other technology like LED projectors?
If I was shopping I'd stick with CNET or Amazon lists.
Work down that list until you hit about 4 or 5 that meet your requirements.
Tip: I use HANDBRAKE to transcode videos to what may play on such things.
Want to project an .mov file on a loop in a gallery using a projector with good audio. Besides the projector, do I need some sort of media player to read the .mov file (on a usb) or do some projectors come equiped with this capability? Any suggestions?, cost is a consideration. (Want 3000 lumens, DLP, hi res, 0.9.1 throw weight.)