New version up, changes:
-Added the ability to start (instead of auto-start) and stop the service, and have the audio running without the app being open (back Android key).
-Added a background to make the app a little more pleasing to the eyes.
-Added in an unfinished dynamic mode that changes the background volumes at random times, to simulate an ongoing storm. This is highly experimental.
Still not sure what the stuttering problem is for some. I can't replicate it anymore on any of the phones I have access to :(