Hi, nosynths. I'm glad you are enjoying your phone; my brother has the same model as you and loves it, and I have the Moto Droid, which I love. That sound is an option to choose in my sounds menu, however it wouldn't be available on your phone. Technically, you do not have a Droid; you have an HTC Eris with the Android OS. Droid is the actual model name of Motorola's version, so that sound is exclusive to their marketing and their devices.