Hello,
The plugin uses the audio files associated to the products.
Please, go to the product, tick the “Downloadable” option, and enter audio files as the downloadable files (if you are defining variable products, at least one of variations should be downloadable, and if it is a grouped product, at least one of the grouped products must be downloadable), and finally, tick the “Include music player” checkbox and press the “update” button.
That’s all.
If you are not seeing the player in your product’s page, be sure the product is configured as downloadable, and you have associated audio files to the product. If you’ve not assigned a price to the product, WooCommercer won’t call the hooks that include our player.
If you need additional help, please, do not hesitate in create a ticket in the forum.
Best regards.