My N2 updated today but i decided to try relkais nightlies. So here i am.
After the N2 nightlies the CoreELEC settings did not have the option to add custom channel. Just advising.
I updated with Relkai’s .tar. all good.
I then tried one of my addons that had no Audio . Kayo Sports.
I had the same issue as posted previously 6d
Using this current Relkai image I then went into the Settings / System Settings / Audio / Output Configuration / CHANGED it from default BEST MATCH to Fixed . Now i have Audio working on Kayo Sports . Only had the issue with Kayo when the default audio settings were on Best match.