Ok I just had a question I just noticed when I put my phone on vibrate you can still hear sounds sometimes.
I think I only noticed it on Twidroid Pro and eBuddy I had my phone on Vibrate and it still was playing sounds.
Is this a DROID problem or Software problem? I haven't investigated yet to see if any other apps do it.
Go to menu>settings>sound & display>Ringer volume
check the box that says "Use incoming call volume for notifications"
Thant should work.
its selected hope it works