Its been a while since i've been here.... I'll get straight to the point = ]
setVolume command controls all the volume for every sound, this I know. what i forgot is the way to get around it, so the set volume command only affects one sound.
You need to associate your sound object with a specific movie clip. So, for example, if you have an empty movie clip on the _root timeline with an instance name of myMovie.
mySound = new Sound(_root.myMovie)
Then, you can change the properties of mySound, and it will only affect sound objects that are associated with that movie.
No, it shouldn't matter how the other sounds are called. If it's not working, the most common reason is that it cannot find the container movie. Check your path. I usually just put an empty movie on the root level so it's easy to target. If it's playing the wrong sound, I can only recommend that you check the linkage ID in your library.