Well I try to answer you.
I test my player under WinUAE with OS3.9 (legal copy) and yes it doesn't show videos to the problem with the speed except the videos mpeg 1 and with little window, but it plays other formats as movie setter, gif, apng, and yes it needs the RTG because Hollywood needs it. I can't test my player in my Amiga 500 because it is obvious.
Second my site in spanish language, well, my english is very bad and tired of jesting
and several mistakes that only gave me problems with the people, I did the V.A.M.P. site in spanish but the documentation the guide was wrote in english, easy and single although I fear with some error, because I'll need live in England, Ireland or USA a seasson to learn well the english, although no in England because now there are many spanish for there, guilt to Mr. Rajoy and Mr. Zapatero.