Where are combine radio sounds located?

Hi, i wanted to change the sounds but couldn’t find anything on where they were supposed to be according to the sound manifest that did not exist. In other words nothing exists regarding the radio sounds so im really lost… Please help.

They are hidden in the GCF files. Download GCFScape to browse them.

Ty for post, but where do i look into? Garrysmod.gcf ---- ?

Its either in Source sounds.gcf or Counter-Strike sounds (or content).cgf