Authoring is the process of creating audio sound files. Distributing is the process of incorporating the sound into your site, and delivering the whole package to your readers. Playback is using the site and hearing the sounds in context. Authoring Think about how you're going to get your sound. Some people create their own sound.
Some people use recorded sound clips, which are somewhat like graphical clip art.
Sometimes, you'll hire a composer to create sounds for you. Depending on what type of sound you'd like to use, you may want a professional to create it for you. If you'd like to use music on your site, consider using a composer instead of creating it on your own. Musicians have an ear for what type of music works with what. But you can easily create feedback sounds or sound effects yourself.