Mobile Media Center - If you like to play all kinds of media on your Windows Mobile phone or PDA, controlling everything with a touch of your finger, then take a look at Mobile Media Center.
Mobile Media Center turns your Windows Mobile device into a media powerhouse, that can be controlled by finger
Pocket Player is a rockin' way to enjoy music and video on your mobile device, with many media and playlist formats, Internet connectivity, plugins, and an intuitive interface!
VLC Remote allows you to control the VLC Media Player on you desktop PC using your Windows Mobile device.
Update Description:
v0.92: - New Release includes several bug fixes as well as new QVGA 240x320 skin (in addition to previous 320x240 one)
Kinoma Play is the world's first mobile media browser. It is everything you need to find and play video, audio and pictures, whether they are on your phone, on your home PC, or on your favorite web services.
Video
Share the YouTube clip that made you laugh out loud. Catch breaking news updates from Reuters. Watch recorded TV via your home PC, or bring it with you
mPlayer is one of the most popular Linux/Unix media player. Now, thanks to XDA-Developers forum member amitv_17 its ported for Windows Mobile devices.
Everything is still under development but most of the usual features are already available plus support for the basic audio/video formats like AVI, WMA, MP3, OGG etc
RealPlayer Preview Release-RealOne Player from RealNetworks, Inc. is a mobile version of the infamous desktop pc real player which allows you to play real audio and real video stream formats. The v1.1 Preview Release supports RealVideo 9
MyPlayer is a light-weight application that provides access to BBC iPlayer, Four On Demand, Five On Demand, MSN Video and SBS directly - eliminating the requirement for a (flash-enabled) mobile browser