I have an old Pocket PC which is using Microsoft Windows Mobile 2003 Second Edition for Pocket PC – Professional. It uses 203 MHz Samsung S3C2410 processor. 25 MB user available memory is all that I have. Therefore, it is a little hard for me to play media files with this Pocket PC. However, The Core Pocket Media Player (TCPMP) saves the day. It does not require high end hardware resources to play media files like DivX video files.
TCPMP is an open source application but discontinued. It is known as BetaPlayer previously. The latest version is CorePlayer Mobile and Pro v1.3 from CoreCodec Universe. But you need to purchase it. Not longer a free product.