You don't need a "player" on your server. Easiest solution is to load your videos onto a site like vimeo (free for "basic" accounts).

It works like you-tube, but is better than you-tube, because you don't get all the ad-spam nonsense that you do with you-tube.

When you have loaded your videos into vimeo, you just grab their "embed" code, and strip that into the source code of your product descriptions.

Takes 30 seconds...

(SEE: http://vimeo.com/help/faq/embedding)