The best practice answer to this is 'No' always... except, if the reason they came to your site is to hear the jingle.

If you **have** to do it... reduce said jingle to just the hook portion... i.e. for Red Robin they would just play *'Yummmm'*

Also, get and abide by the users volume settings. Do not set volumne to 100%, because you have no idea what their speakers are turned up to.