It looks like a lot of fun, and I can't wait for it to behave like a normal video player so I can enjoy it. Seriously, there's a lot of things that I will one day love about it, once they've figured out how it should act. For instance, push the rewind button and it should rewind, not slow to one-quarter speed; try to rewind another way — by clicking in the timeline a millimeter or so to the left of its current position so it'll rewind a couple of minutes — instead of jump back to the beginning of the film with absolutely no way to make it return to its proper point no matter what you try. Currently everything 'works' like that — utterly contrary to what you expect it to do, as if it were designed by another species. I have watched several movies with it: one from a VISEO_TS folder, a Matroska, an AVI, an MPEG-4, a few different types/formats of MPEG2, and even some elementary streams I coaxed it to mux (sort of) — but I got angry at the damned thing each and every time for being so contrary.

I really do want UMPlayer to live up to its ambitious design, and once it does I'll probably get rid of most of the other 6 or 7 video players that any Mac owner must have to enjoy media exactly the way s/he wants it, the way others do with only 1 or 2. But today, right now, it's got an unbelievably looooong way to go just to be normal, or even tolerable.

Looks fine. But is it just me or most of the menus are in...spanish ??

very promising player!