Unpacking .Soundpackage files?

SoundPackager package files are encrypted, so there is no way to extract files from them without using the actual program.

You can access the wav files once they have been extracted by SoundPackager, but remember that usage righs might be restricted for some of them. For personal use, you can probably do what you want with them, but modifying them (such as repackaging) and then distributing the result is probably forbidden.

Depending of what you intend to do with those files, you should probably contact either Stardock (via [email protected]) or the original author of the package.