No sound device detected

Hey, recently at university we have all been experiencing a problem with audio in our animaton. Whenever we try to listen to audio throughout our animation it doesn’t work and a text box opens up and says:

  • No sound device detected.
    -Audio playback will be disabled.

We need to use the audio as it is a part of our module to do lip sync and this has halted everything.
Please give out a solution or a fix so I can do something about it.