Which resources are loaded on page load

I have a lot of mp3s in a project which are mainly played from buttons using Hype’s built in Play Sound Action, though some are played using js. My question is, will these mp3s load when the Hype document loads in a web browser, or do they only load when a button is pressed which triggers the mp3?

Thanks for any help on this.

If you have ‘preload’ checked in the Resource library for those audio files, those files will be preloaded. Similarly, if you have images set to ‘preload’ they will downloaded as part of the download process for your document.

By default, your audio will be preloaded if you don’t change anything and your audio file has been added to the resource folder.