Currently MPlayer doesn't support DVD menus... Well, in fact it does if compiled with dvdnav support. The last time I tested it, it didn't work quite well. Anyway I'll test it again using a more up-to-date libdvdnav and I'll see if it's possible to add support for it in SMPlayer.
Anyway, even there are no DVD menus, you can still select your desired title, chapter, audio track, subtitles... in the SMPlayer menus.
