PhoneGap - AudioFlinger error while receiving a Gmail email

In my (XUI) on click handler, I have this:
navigator.notification.beep(2);

The problem is that beeping stops working after awhile. I think it stops working whenever my phone receives a network tickle from Gmail.

If I keep playing the game after the sound stops, the app crashes entirely after a little longer. That's really bad.

The log.txt showing the AudioFlinger error & Gmail notification:

I'm stuck. I guess these are my options:

Play a non-beep sound on click and see if it still happens. Find a free wav to use.
If that doesn't help, look at PhoneGap.java to better understand how audio works in PhoneGap. And learn how audio generally works when using the Android SDK.
Give up and remove audio from the game.