Windows Media Player 9 Release Candidate 1 has been released.
This is build 2926

Get more play, your way with Windows Media? Player 9 Series Release Candidate. Get fast and flexible playback with the best audio and video quality for Windows and the Web. Includes special new features optimized for Windows XP.

Windows Media Player 9 Series Release Candidate for Windows XP:
hxxp://download.microsoft.com/download/winmediaplayer/WMPbeta/9/WXP/EN-US/mpsetupXP.exe


Windows Media Player 9 Series Release Candidate for Windows 98 SE, ME, and 2000:
hxxp://download.microsoft.com/download/winmediaplayer/WMPbeta/9/W982KMe/EN-US/mpsetup.exe