most distros will support these but due to legal reasons most don't come with support enabled.
choose a distro that you like the look of,
go the the distros forum here for you distro, and read the stickeys,
most distros tell you how to enable media support in the stickeys...
eg for open suse http://www.linuxquestions.org/questi...engine-597476/
others eg. ubuntu will just ask you if you want to insatll support the first time you try to play such a file