This is a simple I2S audio transceiver example. You can plug any source of music and listen to it.
The driver requires and provides Audio data with the following parameters:
44100 kHz sample rate
Signed 24 bit PCM
mkdir build && cd build
cmake -DBOARD=litex_vexriscv ..
It seems that after a few minutes some music delay occurs, this is because the sound driver is not able to send data as fast as it receives it.