Working from example code at https://github.com/miketeachman/micropython-i2s-examples/blob/master/examples/play_wav_from_sdcard_non_blocking.py Problem replicated with two uf2 firmware images: Official Raspberry Pi Pico UF2: MicroPython v1.18 on 2022-01-17; Raspberry Pi Pico with RP2040 My version b...