I'm new to Android. My Palm Centro died and I bought a Motorola DROID 4 because it has a real keyboard. I'm so frustrated that I'm thinking of returning it within the allowed period. Maybe I should get a Blackberry or an iPhone? Having invested much too much time getting basic functions to work, I'd like to try solving the changing tone problem before giving up.
The default function to sound a notification for a calendar meeting didn't work. I searched and found Calendar Event Reminder, which appears to work as advertised. But this morning it sounded an unfamiliar tone instead of the one I selected, which worked yesterday. This appears to be the same problem that others have reported in this thread.
From my limited experience, it appears that the default apps and built-in function in the Android are faulty. I can't get the functionality I had with a Palm Pilot! It seems that the general solution is to find an app that does the job right. In this thread and related ones, I've seen a few apps mentioned. The one getting the most positive feedback is Ringtone Manager Pro. I thought I'd ask for advice before giving it a try.