If you're having trouble getting audio to work on macOS Sequoia 15.4 Hackintosh, this fixed it for me — huge thanks to this video: Install VoodooHDA YouTube
It uses a simple script to automatically install VoodooHDA, which worked perfectly when AppleALC failed.
Just open Terminal and run:
curl -sL https://raw.githubusercontent.com/alvindimas05/VoodooHDAInstaller/refs/heads/main/install.sh | bash
GitHub repo for more details
Tested on my setup — audio now works even on internal speakers. Hope it helps someone else!