alright
death sound is DeathCrySound and chest sound is rewardSound
you gotta start up a server, go to the tree, look for the datablocks, and then just search for the sound datablock you're looking for
then use something like the post above, provide the datablock names and the sound you want to use to replace them with, zip it up, and there you go.
right now i just need to test if it works without others having the add-on
it doesn't
how can i make it so everyone can hear it?