Sonos player not calling GetStreamingMetadata
问题 I have a live radio stream using HLS and I would like to display track / artist information when we're playing a song. As far as I can understand from the API documentation and question Streams - hasOutOfBandMetadata and getStreamingMetadata should be called for HLS if we have hasOutOfBandMetadata set to true. The mime type we return is "application/vnd.apple.mpegurl". getMetaData returns a list of channels, where we build each channel with something like this return new mediaMetadata { id =