Hello! I understand you're using the LG XBOOM app on your Mac (OS X 10.15.7), and while the app shows audio controls, you're unable to switch off the speaker lights. Thanks for sharing that detail. Just to clarify, are you only seeing audio options without any LED or lighting control options in the app? Also, which exact LG XBOOM speaker model are you using? That will help me provide more specific guidance.

Meanwhile, here’s a general approach we can try:

1. Check App Version & Compatibility: Sometimes lighting controls are only available on certain models or app versions. Please ensure your LG XBOOM app is fully updated from the Mac App Store if possible.

2. Explore Lighting Settings in the App: On some LG XBOOM versions, the light settings are under a section like "Light," "LED," or within a sound profile setting. Double-check your app interface for any small icons or menu options related to lighting or colors beyond the main audio controls.

3. Try Basic Reset of the Speaker and App:
- Power off your speaker.
- Force quit and reopen the LG XBOOM app on your Mac.
- Power the speaker back on and reconnect.
Sometimes reinitializing the connection refreshes the full control panel including lighting options.

4. Firmware Update for the Speaker:
Lighting control often requires that the speaker firmware is current.
- If your app or speaker allows, check for firmware updates.
- If you see firmware update instructions in the app, follow them.

5. If Lighting Control Is Missing Altogether:
There are reports that on macOS, especially older versions, the LG XBOOM app sometimes shows limited features like audio but not lighting controls (which may be more available on mobile apps for iOS and Android). If you can try using the LG XBOOM app on a smartphone, you might find the lighting options there.

If the lighting option is present in the app but does not toggle lights off on the speaker, that could indicate a connectivity or firmware issue.

Could you please confirm which LG XBOOM speaker model you have? Also, have you tried using the mobile version of the app, if a smartphone is available, just to check if lights can be controlled there? This will help narrow down if it’s a Mac app limitation or something else we need to address.

Looking forward to your reply so I can assist you further!