Compared to Windows Media Player Mobile is cheaper in the consumption of the battery, it displays video full screen, manages playlists, has multilanguage support, VGA screen, and even an internal benchmark to measure the graphics performance of your device. Not bad.
The latest version is freely usable 0.72 for Windows Mobile, Smartphone and PalmOS, with both sources and some of the codecs that give support to some audio / video extra, such as AC3, FLAC and so on. etc..
Reproduction of the WMA and WMV with Windows Mobile 6 can give problems, to solve the problem just follow the instructions in this article. In case of downloading 2 DLL in the Windows folder on your handheld. If you have problems with slow play, you can read this article.
TCPMP allows the display of videos of Youtube, after installing TCPMP Plugin for Flash Video. Copy the two files with the extension. PLG in the handheld where TCPMP is installed, then the associated file. Flv on TCPMP.