KO Myung-Hun had released K Movie Player v0.6.3 for eCS-OS2. (2011/02/06)
It is available for download at hobbes.
"K Movie palyer is a movie player based on FFPlay, without SDL dependencies and support for DIVE, SNAP video overlays, and WarpOverlay. "
Web Site: http://www.ecomstation.co.kr/
KO Myung-Hun also accepts PayPal donation for their eCS-OS2 ports on this page .