Darkly_SteamGear

so anyways, I've been trying to mod minecraft so that every time you break a block, or hit an entity, it makes a sound when using this item i've been trying to code in. i tried onLeftClick, and no sound, i even tried using a vanilla sound to see if the code was working properly, and it didn't even work. I cant seem to get this sound to play. and also i tried adding the files to the .json configuration file and it seems to be of no help to me. also the sound files are in the \src\main\java\assets\modname\sounds folder. i could really use some help, as youtube and the rest of the internet tutorials have failed me. i am modding 1.6.4 on the gradle setup in forge 9.11.1.964 (as for most of the good mods are back in that update, and i want to be able to use it along with a few other 1.6.4 never updated mods. 1.6.4 was a good era for mods, what can i say?) anyone here got something useful that i could possibly use or some good advice, please comment.