Hey, guys!
After a lot of trial & error, I was able to get the board online & an external SD initialized OK via a breakout. Everything seems to work fine, other than actually hearing the audio play over the call - only silence is heard, even though the WAV file is recognized OK and even the duration is correct.
I've even tried this example "as-is" and the result is the same.
Can anybody confirm this?
Any help would be greatly appreciated!