I made a tool few minutes ago
it applies a sound from an URL to the prop you want, and it removes the sound when removing the prop or right clicking it.
wah, too much text… here is a video:
(put lua folder inside zip archive into garrysmod folder)
if you’re not hear sound, turn up your volume. when its allready on max, try an other URL. best works with .mp3 or .wav at the end.
the URL does not need the http:// at the beginning.
EDIT: Added to workshop