Headphones and notifications

Is there a setting (EVO 4g) that will allow an audible notification of an incoming text/call while listening to music through headphones?  I always have my phone on vibrate and can't hear or feel incoming calls/texts.  I assume that since I get a beep notification of an incoming text while talking on the phone (without headphone on), that would also be the same while listening to music.  

Thanks!

Edit: The only way I've found for solving this is to turn the phone off vibrate when listening to music on headphones.  Simple enough!