I have seen this issue asked before but have not seen a satisfactory answer. Sirius XM recently updated their mobile app to 5.5.4 build 156754786. I just loaded my Mac desktop version of Sonos and am receiving the "Unable to browse music" message when trying to load the Sirius XM source. I have been using this source for months without issue. With so many reports of this issue can Sonos please provide some sort of answer as to why this happens and how to work around? Maybe there is some sort of bug that needs to be addressed? Thank you.