Hi. > Has something in the format changed? (i.e. do I need to upgrade mplayer now > too?) Not upgrade, but you have to re-compile mplayer or at least one file, libmpdemux/demux_mkv.cpp, with the new libebml and libmatroska. The lacing has changed and will save space compared to older versions. -- ==> Ciao, Mosu (Moritz Bunkus)