The application is installed on Zorin 17.1 but no audio files will play. Screen displays action of play but nothing moves? Tried network and local audio library?
Have you checked running in terminal
alsamixer
and checking if any speakers are muted with an [MM] ?
I have rarely ever used Kodi, so here is a fuller article on troubleshooting tips in which we may get lucky and find one that helps:
Kodi Has No Sound on Videos – How to Fix?.