Date: 2007nov26 OS: Windows Vista Q. Can you install Windows Media Player 10 on Windows Vista? A. It appears that Windows Media Player (WMP) 11 is built in to Vista. There are no places to download other versions of WMP for Vista on the Microsoft site. I tried the CademiaX instructions to replace WMP 11 with 10; but it didn't work for me. So the answer seems to be: no.