Hi @Trill14n, welcome to the Sonos Community!
The ‘Unable to Browse’ error can be caused in a few different ways, but generally it shows up when there is a firewall or Domain Name System (DNS) issue.
First, it’s best to perform the simple actions, such as: removing then re-adding Apple Music, trying a different controller, and trying a different music service.
If the issue only occurs on one controller, then check the controller for any VPNs or security apps or any special DNS settings on the controller that may cause address lookup failures.
If the issue occurs across multiple devices, but only for Apple Music, then I’d recommend submitting a diagnostics and reaching out to our support team for further assistance. They have the tools available to troubleshoot this issue for you.
I hope this information helps!