[Solution] No MIDI music on GNU/Linux

[Roboron]

I've been suffering this problem for years, and none of the solutions proposed here on the forums worked. I had lost all hope. However, recently I found a Japanese post about this problem, which offers a working solution. TLDR:

• Compile Simutrans with mixer_sdl2
• Install fluidsynth (I've tried with timidity++, with no luck)
• Install a soundfont
• Open Simutrans with SDL_SOUNDFONTS=/path/to/soundfont variable set

I get some ALSA complains, but nothing that prevents the music from playing. The downside is that Simutrans will take significantly more time to startup. But I finally got to listen the Simutrans music 

P.D.: I've updated my Arch Linux packages to compile against sd2_mixer, change the timidity dependency to fluidsynth, and display this information after installing the game.