Another update which works around some other bugs I found, some of which pertain to you (such as not screwing up when the track has a single quote in the track title) and others which don't pertain to you (austerity measures for memory/string usage on Arduino).

https://create.arduino.cc/editor/tfabris/4c5eea9a-1462-45d7-908d-81a5bb6b0d90/preview

I'm still totally stumped by the need to reject certain PDU_REGISTER_NOTIFICATION messages, I thought I had a working solution but it didn't actually work the way I thought it did. There's a really teriible crappy workaround in place for it right now that I really need an answer from Silicon Labs support to fix properly. frown
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Tony Fabris