Hi there! I can understand how frustrating it must be to receive visual notifications but not sound notifications from ResX. Let’s work through this together.

First, let's make sure that your sound settings for notifications are set correctly. Here are some steps to follow:

1. Check Sound Settings:
- Click on the Apple menu () in the top-left corner and select System Preferences.
- Choose Sound, then go to the Sound Effects tab. Ensure that the volume is turned up and that "Play sound effects through" is set correctly.

2. Check Notification Settings:
- Still in System Preferences, navigate to Notifications.
- Find and select ResX on the left sidebar.
- Make sure that “Allow Notifications” is enabled and that “Play sound for notifications” is checked.

3. Restart Your Application:
- Close ResX completely and reopen it to see if that helps reset the notification sounds.

4. Disconnect Bluetooth Devices:
- If you have any Bluetooth devices connected, try disconnecting them temporarily to see if that changes the sound behavior. Sometimes, devices may reroute audio unexpectedly.

5. Check App Volume:
- Open Applications > Utilities > Audio MIDI Setup to check if the audio output settings are configured correctly. Ensure that your output device is set to the correct one (like your speakers or headphones).

If you've tried all these steps and are still having issues, it might be helpful to look into whether other applications are producing sound notifications properly. Are other apps functioning correctly with sound notifications?

Please let me know how it goes, and if none of this helps, we can explore other options together!