I’m fairly opinionated about this, but I an explicitly against including any sound on websites. Most especially background music.

Let’s say I’m sitting in my office surfing the web looking for a nice apartment by the beach to stay at on my upcoming tropical holiday to Cairns. I’m *supposed* to be working. The pleasant sounds of birds chirping and the beach rolling in starts blaring through my speakers. BUSTED! Everyone in the office looks toward my computer to see what I’m doing… so I quickly shut down my browser window to stop the sound.

You might think this isn’t likely on your website, but check your traffic stats. Most websites get a large percentage of their traffic during office hours, likely from people who are supposed to be working.

If you must use sound on your website, don’t play it by default. Allow your customers to turn it on if they want to hear it.