@DeadIntermediate As @opensourcefan said, we need more details about your problem...
Have you checked the wiki? https://github.com/RetroPie/RetroPie-Setup/wiki/Sound-Issues
Did you google it?
https://www.raspberrypi.org/forums/viewtopic.php?f=78&t=147533
https://www.raspberrypi.org/forums/viewtopic.php?f=78&t=103773