Animation is pretty common in HTML5 websites nowadays, in order to give your user a great experience, you might want to add some sound effects to your website. Of course, don't over do it otherwise it will be quite annoying and always provide option to mute the sound.
Here we have a jQuery plug-in called easyAudioEffects.js. You can easily add sound effects for any of the elements on your website. It has different mode which will play the sound differently - oneShotPoluphonic, oneShotMonophonic, date and loop. For the effect, you can checkit out on their website for demo.