Sound problem on Raspbian 12 and PiArm Robothat with RaspberryPI4

Dear People,
I have bought 5 kits from PiArm and installed Raspbian with RaspberryPi4. The robot works all is great but I don’t get sound on the hat:

This is the error:

Warning: Xing stream size off by more than 1%, fuzzy seeking may be even more fuzzy than by design!
Traceback (most recent call last):
  File "/home/pi/piarm/examples/", line 36, in <module>
  File "/home/pi/piarm/examples/", line 10, in sound
  File "/usr/local/lib/python3.11/dist-packages/robot_hat-1.1.0-py3.11.egg/robot_hat/", line 98, in sound_play
pygame.error: Unknown WAVE format

I know I could install your OS EZ Os, but I would really like to make it to work now with the current system. Any ideas?
Thank you

You can use the EzBlock app to control the robotic arm.
You need to install the EzBlock OS image system:
Install the EzBlock Studio app on your mobile phone or tablet.
For details on how to connect and operate, please refer to the tutorial:
When using Python to control the system, what operating system have you installed? Please let us know so that we can help reproduce and troubleshoot the issue.

Thank you for your answer. I have used Raspbian12 as the title says and installed it on 5 Pis so if you could have liked in to this issue would help me a lot thank you