I went through and updated the schematics for the Etherwave main board 11-211J and the Etherwave Plus's CV board BRD-10-011-213B, and the PDFs are available at the links below. For some reason I did not get to the headphone amplifier section of the CV board, probably because that was not shown on the original schematic. Updates or comments are in red.
It would be a good idea to download these if you think you'll ever need them. If Dropbox goes away or decides to pull a "Photobucket", all of this stuff may disappear from this forum.
I am reasonably certain that the component designators have been corrected, but if you find any errors please post them here. Thanks.