I have installed Notion 6 and downloaded some of the expansion packs. I cannot see anywhere in the Score Setup section where the expansion sounds are listed.
I have followed other question responses to click Help > Software Activation > Receive Licenses, but the Sphere version has no Receive Licenses button, but it does list all of the expansion sounds as authorized.
I also followed the suggestion to click File > Preferences > Audio, and make sure the Samples Folder is set to: C:\Program Files\Notion 6\Sound, which it is.
Finally, I checked the actual C:\Program Files\Notion 6\Sounds folder and I have two folder inside, Bundled and Expansion, both which contain many *.prox files.
Still, I cannot figure out how to access the expansion sounds within Notion 6.