http://a117.ms.a.microsoft.com/f/117/1611/2h/download.microsoft.com/download/winmediaplayer/mac6.3b2/6.3/MacOS/EN-US/wmp_mac_63beta2.hqx
<a href='http://go.hitsquad.com/www/delivery/ck.php?n=a354d9f9&cb=INSERT_RANDOM_NUMBER_HERE' target='_blank'><img src='http://go.hitsquad.com/www/delivery/avw.php?zoneid=46&cb=INSERT_RANDOM_NUMBER_HERE&n=a354d9f9' border='0' alt='' /></a>
WMP V6.3b here... maybe?
http://a117.ms.a.microsoft.com/f/117/1611/2h/download.microsoft.com/download/winmediaplayer/mac6.3b2/6.3/MacOS/EN-US/wmp_mac_63beta2.hqx