EDIT: This problem is fixed. don't contact me with any solutions anymore, as luiscarlosgm was the first to help me. Thank you!
I was testing the mod i was making, until on the title screen, the music cut out.
I just decided to load into a level, only to find out all the voicelines i finished working on were broken. They were high-pitched and just glitched in some places.
I have a feeling this has to do with the new update for the game, because in Half-Life 2, Models (on mac) are completely broken.
Until i find out what is wrong, the project is on hold.
Images because moddb won't release your article without images