I'm sorry if this has already been asked before, i tried searching but i couldn't find anything relevant.
So basically i've been trying out the ambient_generic entities in the source SDK and there aren't any songs from hl2 which seems to work! Something odd i've noticed is that only the few .wav files seems to work. But since most of the songs from HL2 is in a .mp3 format i can't use any of them.
Are they supposed to be .mp3 files or has something gone wrong? Any help would be appreciated!