Volume Adjustment in Symfonium via TV Remote

Feature description

It would be nice to use the TV’s Remote for Volume Adjustment in UPNP mode

Problem solved

No need for the Receiver’s remote

Brought benefits

Seamless Operation on Android Tv

Other application solutions

BubbleUpnp lets You click either the in- or decrease Volume Button on NPS

Device type

Android TV

Additional description and context

Btw: besides that, the App is pure gold​:smiling_face::heart:

I searched existing feature requests

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