The 750 works fine for me on Win7 x64. The interface has changed for the better. I have only used it for watching recorded TV from the media center, but at least this function seems to work fine.  I haven't tried to play anything from my music library yet, but I will be testing that, as I had problems playing wav files with Vista Media Center.  Perhaps Win 7 won't have this problem (I am hoping, but I'm also not holding my breath.)