I will give you general information, but if you want those GDT boots you'll have to email trades@gratefuldreams.com.
The Charlie Tapes are 6CD's of transferred material from the old Majesty era cassette tapes he had up on ebay awhile back. There is a lot of interesting stuff on those. XX-SS is a 6 disc compilation of the Octavarium tour, pretty much including most of the songs that were played on the entire tour.
Live in the Studio, if I recall correctly, includes tracks that are on the Majesty Demos.
So I guess that leaves the FM compilation?