Glad that worked out! I'm still concerned about he audio amplifier Wireling example, however, and I'd like to help get that working.
After reviewing the tutorial, there may be an issue with downloading the example folder so that the files stay intact in the same file directory after unzipping. Can you try downloading the attached zipped folder, keeping the files all in the same folder and open the example by double clicking on the .ino file?
The folder should look like the attached screenshot after you unzip it and you'll double click on AudioAmplifierWireling.ino to open it.
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