not exactly. Lubuntu 12.04, gnome-mplayer 1.0.5-1 using http://mb-s2.sakura.ne.jp/tirol/junk/midi/smetana_vltava.mid yields:
--- GNOME MPlayer v1.0.5 gmtk v1.0.5 Running with GIO support Using audio device: Default The volume on 'Default' is 1.000000 Using match: type='signal',interface='com.gnome.mplayer' Using match: type='signal',interface='org.gnome.SettingsDaemon' Using match: type='signal',interface='org.gnome.SettingsDaemon.MediaKeys' Proxy connections and Command connected opening playlist playlist detection = 0 adding file:///home/wxl/Downloads/smetana_vltava.mid to playlist (cancel = 0) getting file metadata for /home/wxl/Downloads/smetana_vltava.mid mplayer -vo null -ao null -nomsgcolor -nomsgmodule -frames 0 -noidx -identify -nocache -noidle /home/wxl/Downloads/smetana_vltava.mid playing - file:///home/wxl/Downloads/smetana_vltava.mid is playlist 0 Looking for cover art at /home/wxl/Downloads/cover.jpg Looking for cover art at /home/wxl/Downloads/Folder.jpg setting up mplayer mplayer -channels 2 -af-add export=/tmp/mplayer-af_exportppjcpw:512 -quiet -slave -noidle -noconsolecontrols -nostop-xscreensaver -identify -volume 100 -softvol -msglevel all=5 -osdlevel 0 -delay 0.000000 -subdelay 0.000000 -subpos 0 -sub-fuzziness 0 -wid 0x6600023 -brightness 0 -contrast 0 -hue 0 -saturation 0 -alang Zuni,zun -slang Zuni,zun -nomsgcolor -nomsgmodule -nokeepaspect -ass -embeddedfonts -ass-font-scale 1.00 -ass-color ffffff00 -cache 2000 /home/wxl/Downloads/smetana_vltava.mid MPlayer svn r34540 (Ubuntu), built with gcc-4.6 (C) 2000-2012 MPlayer Team ERROR: mplayer: could not connect to socket ERROR: mplayer: No such file or directory ERROR: Failed to open LIRC support. You will not be able to use your remote control. Playing /home/wxl/Downloads/smetana_vltava.mid. Cache fill: 0.00% (0 bytes) libavformat version 53.21.0 (external) Mismatching header version 53.19.0 ID_VIDEO_ID=0 ID_VIDEO_ID=0 Exiting... (End of file) ID_EXIT=EOF in media state change with state = 0 --- it seems to be using libav, which doesn't seem to support midi: https://libav.org/general.html#Audio-Codecs on the other hand, this discussion suggests that it is indeed true that mplayer does not support midi: https://bugs.launchpad.net/ubuntu/+source/mplayer/+bug/231421 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1005861 Title: gnome-mplayer cant play .mid files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-mplayer/+bug/1005861/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs