We have a great collection of Zombie Sound
Effects available in the Horror Sound Effects on freesoundeffects.com.
And we have a category of general zombie sounds if you’re looking to make a film about zombies.
The above sounds are available for professional licensing to be used in
commercial projects.
But we also have a section of free monster sounds and zombie sounds available in the Free scary and Horror Sound Effects for immediate download to be used in educational and personal projects (these do not include a license for commercial use).
We also have some awesome Royalty Free Horror Music and Royalty Free Suspense Music available for licensing in commercial projects and youtube videos available at our new Royalty Free Music site at royaltyfreemusicclips.com

You can also get music for youtube at royalty free music clips site. This music is guaranteed not to trigger any copyright flags on youtube or your money back.