Sorry, couldnt help it.
I just had a look on download dot com, doesnt seem to be any? Try two cows.
Just be careful with free dvd players, as there are licensing laws about MPEG decoding of dvd's. Hence the reason it doesnt come with windows as standard.
Someones got a pay. If its free they get their money from installing spyware on your machine, or the product is adware (same thing really).
I know some of software that is free and plays dvd's and isnt adware/spyware, but im not sure of its legality. So im not going to mention it.