If you encounter no sound when using 3uAirPlayer, follow the steps below to resolve the issue:

Step 1: Check 3uAirPlayer audio settings

Open the 3uAirPlayer software. In the casting interface, locate the audio-related options (such as “Audio Transmission” or “Sound Sync”) and ensure they are enabled.

In some versions of 3uAirPlayer, the audio feature must be manually enabled in Settings.

Step 2: Confirm the computer audio output device

For Windows: Right-click the volume icon at the bottom-right of the taskbar and select Sound settings. Under Output device, confirm that the correct playback device is selected (such as computer speakers or external speakers).

For Mac: Go to System Preferences → Sound → Output, and ensure the selected output device matches the current casting audio channel.

Step 3: Update 3uAirPlayer to the latest version

Older versions of 3uAirPlayer may have audio/video sync issues or audio transmission failures.

Go to the official website or app store to download the latest version. After installation, restart the software and cast again.

Step 4: Check device connection and network

For wireless casting, ensure the phone and computer are on the same local network and that the network signal is stable (you may try restarting the router).

For wired connection (such as USB), check whether the cable is in good condition, confirm the phone has trusted the computer, and try switching to another USB port.

Step 5: Rule out other interference factors

Close other programs on the computer that may occupy audio resources (such as music players or video software).

Restart both the phone and the computer, clear device cache if applicable, and then re-establish the casting connection.

After completing the steps above, the no-sound issue in 3uAirPlayer is usually resolved. If the problem persists, try uninstalling and reinstalling 3uAirPlayer or contact official support for further assistance.