I have 2 ATV's now, and because of those I have all 200+ of my movies and kids movies in m4f format. I have an ATV that I use in my living room which I'm unhappy with right now because at whatever update point recently it lost the ability to stream movies effectively. I also have one in my bedroom that seems to work o.k. (presumably due to closer physical proximity to my router/iMac). The DVD player in our other TV room recently crapped out. I'm not going to drop another 200+ dollars on another ATV especially given the issues I've been having lately. And rather than dropping $100 on a new dvd player I'd just assume spend the same amount (even less since I have some discounts/coupons to use) on another digital media player that can utilize my already digitized movies (I have them all on additional drives that I'd be able to plut into this). I'm just wondering if anyone has used one of these and if it plays M4v files or how it works?