Me too have the same issue with Dynaudio Music airplay speakers after iOS15.4 update, persist in iOS15.5 The airplay speaker may suddenly change its order in Airplay enumeration list, from for example 2nd to the 1st in the list, when this happened, it's unable to stream anything to which. The speaker itself is functional for WebRadio streaming, volume adjust, recv control over App etc.., only Airplay streaming was stucked. Only rebooting the speaker or Wifi will get rid of this issue for a while. Seems the airplay enumeration list and audio/command streaming mux had some issues, I suspect this is related to the addition of Facetime sharepaly function.