Multichannel audio incorrectly mapped

Hi @Xanderzdad — we should have it included in the next update as @grahamh has commented.

In the interim, I have another (simpler solution) for you.

Go to My OSMC -> Updates -> Manual Controls
Under Apply Hotfix, enter: [deprecated]
This will apply the solution that was proposed above and reboot your device.
Please then test your audio and let us know if the issue is resolved.

Sam