The .wav player is a work in progress !!.
Supports 8 bit 16khz .wav files from spiffs or SD card
Plays .wav files directly to a pin so It can be connected to a speaker.
Supports timer 0 and timer 1, just edit in the .h (header) file.
If you use SPIFFS increase the maxBufferSize variable in TGpcm.cpp to improve sound quality.