HI guys, It has played nice in vista 32, flawlessly all the BD titles that I have tried up to the moment both disks and from hdd, the only problem has been 3:10 to yuma, because the disk and the rip doesn't allow the program to start playing, same PDVD, to see the movie you have to use TSremux. In all ocasions the sound is superb, much better than PDVD, the colors are also better and the image is smoother. I hope that with the updates the issues with xp and vista 64( it does nada) are resolved. I have tried with the 3 OS, in the same system with different partitions. And as told you guys it plays nice in vista 32.