If have to be sarcastic, educate yourself first. Dolphin 7 is backwards-compatible as much as any open-source web-software may be. We provide version-to-version upgrade script and you can use merging software to see the diff.

There is no way, with any software to provide automatic upgrades to modified installation with 100% success rate. It is responsibility of 3rd party modules developers to either upgrade their mods or make them independent of updates. Check out Wordpress, Joomla, Drupal, whatever see more and you will see how all 3rd party extensions display version compatibility.

As for the language:

sound 1 |sound|
noun
vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear

Can see no problem using this word. Especially when you consider that in some cases it may not be music actually, but voice recordings or audiobooks, etc.

I also can't see how we are creating financial liability for ourselves with our software? it has always been exactly the opposite, fortunately.