Sorry for my ignorance, but isn't this more general than playing a sound. Presumably, you want to update the wallet balance from time to time anyway. Don't you have the same address pinging privacy problem no matter whether or not you play a jingle? I don't understand the connection to the audio file.
I'm not sure the Mycelium app updates the balance automatically. I often have to hit the refresh icon to see changes, but that could be because my Internet connection has a high latency, idk.