Getting MIDI Playback working on a modern Linux box with Firefox and Opera.
This information is current to the year 2011.
I was surprised that nowadays web browsers don't necessarily support
embedded MIDI as a default! I tested under WinXP on a virtual
machine and found that M$ Internet Exploder 6 actually plays the MIDI
via windows media player controls, but Firefox wants to install
QuickTime! Yuck!! I remember using Netscape 3 and 4 as well
as whatever version of Internet Exploder was in Win95/98 and they all
used to work no problem. Anyway, I digress..
Install mozplugger and timidity packages. I don't know what
package provides "mozplugger" on systems other than Debian, but in any
case you'll need the library "/usr/lib/mozilla/plugins/mozplugger.so"
Remove timidity from your init scripts (or upstart) so it doesn't run as a daemon.
Edit /etc/mozpluggerrc so it only has this in it:
audio/mid:midi,mid:MIDI audio file
audio/x-mid:midi,mid:MIDI audio file
audio/midi:midi,mid:MIDI audio file
audio/x-midi:midi,mid:MIDI audio file
controls noisy stream: timidity "$file"
Note: I use Pulseaudio so you might need to change the line above
to something like "timdity -Os" if you are only using Alsa. Check
the man page for more info.
Check the plugins page in Firefox to make sure mozplugger acting as the plugin for MIDI files.
This works in Opera as well as long as you choose mozplugger as the
playback plugin for all the MIDI file types in the Downloads options
Note 2: Notice that I didn't tell you how to setup
Timidity? There's some work to make it sound good. You need
to find a good set of soundfonts, assuming you're not using a real MIDI
soundboard. There's info out there, just search.
Here is a really really good soundfont.
Here are two good soundfonts, but not as good as the above.