There are two separate problems happening here that each need to be fixed.
The first problem is that it says “mixer” is not a known member of module “pygame”. This a warning from pyright, which is the code intelligence. Here, pyright is wrong so you have to disable this warning. Open up or expand the below post to see the solution:
The second problem is that a pygame.error says there is no audio device. You can look at the following topic for a solution. Note that audio in replit is usually unreliable, so it is not guaranteed to work for all users: