Simple tasks must have simple solutions~
Source: https://github.com/ZwerOxotnik/Mod-generator
Shortly: that script packing sounds and including them in the game instead of you.
Will you agree with me that such simple solution save so much time?~
Examples: on source and in https://mods.factorio.com/mod/party-stuff
(If you don't understand why you need info.json, look on https://wiki.factorio.com/Tutorial:Mod_structure)
(At this moment, it's suitable for some mod developers and people who want to add sounds to programmable speakers)