Where to get more sound?

You can find them here

How to add them to Mechvibes?

• Open custom folder: In Mechvibes app Panel, hover mouse on More button, select "Open Custom folder". If the "custom" folder is not exists, create it (folder name is lowercased, "custom" is accepted, not "Custom" or "CUSTOM")

• Extract downloaded zip file, copy extracted folder into custom folder

• Restart the app to see newly added sound in Custom section: