FOSS gamedev and creative worlds

Well it seems newest minetest has sound ability. However it comes with only one sound. I'm no expert or anything but I'm having a very hard time finding out what to name sound files.

So far I've found these:
default_dug_node
default_dig_crumbly
default_dig_cracky
default_grass_footstep
default_stone_footstep
default_wood_footstep

and you can do at least 4 sound files. Like:
default_grass_footstep.1.ogg
default_grass_footstep.2.ogg
default_grass_footstep.3.ogg

and such.

So now that sounds are available, we need to pitch together to get a good "easy to install" sound pack to go with it. Maybe two versions with one being a soundpack with all available sounds and a minimal one. Also if someone could point me to any available documentation on the new sound I would appreciate it.