[Ade]

what he means is, client side, it's not enough to put it in ur tf2 folder; after steampipe, all the custom shit goes into /custom/<some custom name folder>/<whatever structure you would have in ur main tf2 folder>

eg: /custom/_my_custom_shit/sounds/rtksounds/soundclip.mp3 if you would have that fodler and that file on ur server and u want to put them manually;
if not then after server download they would automatically go in:
/download/sounds/rtksounds/soundclip.mp3