Re: Video playback
"Don't know what you mean by Alpha 32- I thought the Alpha was the 64-bit replacement for the VAX."
Alpha was indeed a 64bit addressing architecture and implementations, with lots of hardware, firmware, and software features to make it interesting to VAX users looking to upgrade, as well as to others who hadn't been VAX customers.
NT was a 32bit addressing OS so when running on Alpha the address space was only 32bits (as per x86) and only the low 32 address bits were significant.
I'm not aware that there was ever a 64bit NT/Win2K for Alpha (and I would probably have known, at the time).