Firstly, despite its greatness as a media player, within a few minutes of owning it, I'd already found a couple of wmv. and flv files that would not play. Now... this is (correct me if wrong please) the fourth generation of these WD Lives, and I've 'upgraded' from a 1st generation WD Live. So, as far as file playing capabilities go, they may well be generations apart but they still have the same file limitations. Progress? Hmmmm, not in all ways it seems. My first gen WD Live didn't play all flv and wmv files either! But... that being said, it would be unfair just to leave it at that - for this latest WD live also is capable of playing internet files from youtube etc. which is, it must be said, a brilliant upgrade from the 1st gen WD Live. There are also a few (puzzle etc.) games thrown in for fun which you can play on your tv. And its very useful network abilities (included with a very recent firmware upgrade is BBC iplayer which works very well, and Netflix as well as youtube, facebook integration etc) is an impressive upgrade over earlier gen WD Lives. Having Windows 7 on any PC, now you can simply play a file to your WD live and it plays on your TV screen. Pretty good, also for the fact that that's also a way to overcome any of the WD's few file limitations - for if it will play on your PC - that at least is a way to get any troublesome file definitely to play on your TV too. Its user interface is completely updated over that of earlier generation WD Lives. Ok, I'm not too sure whether I'm warming to the new interface just yet, but suffice to say it is definitely screaming with more bells and whistles - while remaining user friendly. What's nice is that you can use it as simply or as complicatedly as you like. So, if you don't feel like reading a long manual? No problem, just load up a file, sit back and play.
Quality of playback is every bit as excellent as I'd hoped on those files which *do* play - e.g., avi's including 720p and 1080p, xvids, .mp4, mpeg, dat, and dvd folder files. However I am still not happy that it took me only 5 minutes to find some files which play easily on any computer but which do not play on this unit (unless you've windows 7 and use the "play to" command). Frankly, at this stage, there should be nothing commonly available that this player shouldn't play. Granted it will play some FLV and WMV files - just not all of them, which is a little irritating. Still, that's really a minor nibble and I very happy with this unit as an upgrade to my first gen unit. Also, one minor niggle goes to the PSU - mine was supplied with a continental PSU and a plug was given as an extra in the posted box. Just be careful to examine your box when you receive it and make sure you don't accidentally throw away or lose the supplied plug adapter or you'll be paying around a fiver to replace it. I'll update my review in due course when I've had more experience with it. It is supposed to be able to update itself via the internet, and although there is new firmware available, my unit wasn't able automatically to update itself. Four stars for the fact that there are still commonly available files which do not play on it, and for its relatively demanding price (given how much more inexpensive competitor units are). However, this is still the best media player of its kind and with only a few minor improvements it would definitely be worth an unquestionable full marks.