If you want to play these in VLC you need a SoundFont (.sf2) file. There's a good list of SoundFont files here [1]. This VLC wiki page [2] explains how to configure VLC to use the SoundFont.
(I'm posting this because the vlc wiki is stale and sent me down a pointless rabbit hole on fluidsynth's old sourceforge site. I'd rather update the wiki. It tells me I need to create an account. When I try it tells me I don't have permission.)
[1]: https://github.com/FluidSynth/fluidsynth/wiki/SoundFont
[2]: https://wiki.videolan.org/Midi/
(I'm posting this because the vlc wiki is stale and sent me down a pointless rabbit hole on fluidsynth's old sourceforge site. I'd rather update the wiki. It tells me I need to create an account. When I try it tells me I don't have permission.)