Maybe a really stupid question these days but…what upload speed do you have? Depending on the encoding of the music (e.g. FLAC) it might just be too much for your internet connection 😅

It would help to know how you setup the Netbird ports to be available on the internet too.

You could - for debugging - use the Netbird SaaS server (I believe there’s a free tier and Netbird being a German startup, I would at least assume, data privacy for the debugging shouldn’t be a big concern 😅 Germans don’t tell their granny their own name if they’re not legally allowed to 😂).