Media Players for Windows Without DRM?

jasonmicron asks: "I am curious as to what you Linux/UNIX people use for a media player that supports both license lookup on the internet and DVD Playback support. I am quite sick of Microsoft's media player telling me that my 'license is invalid', even on DVDs that I own. I find that VERY lame. I ask because not only does Microsoft tell me that my license is invalid but Real Network's Real Player tells me the same thing (even though I place my totally VALID and self-owned DVD in my DVD-ROM player in my DVD-ROM, which runs on Windows). What media players does Slashdot recommend to bypass the total ignorance of Microsoft and Real Networks? I am looking for a Windows solution, though any Linux / UNIX solution is completely welcome."