Windows Media Player (WMP) is a deprecated media player and media library
application developed by Microsoft that is used for playing audio, video and
viewing images on personal computers running the Microsoft Windows operating
system, as well as on Pocket PC and Windows Mobile-based devices. ...
Windows Media Player Mobile. Windows Media Player Mobile 10 on
Windows Mobile 6.5 supports MP3, ASF, WMA and WMV using WMV or MPEG-4