The Namtai EyeToy uses a single USB audio channel. Go to Sound Settings > Manage Sound Devices and enable “Microphone (USB Camera).” Set it as default if needed. If still no audio, your specific Namtai model may not have the mic wired for PC use.
The on Windows 10 32-bit is a fun novelty. It delivers a low-resolution, retro, slightly noisy image that’s perfect for: