Yeah, it gets a little confusing all the different discs.
This is the one I'm seeing on Amazon:
http://www.amazon.com/gp/product/B000PH0Y0E/?tag=neogaf0e-20
There are so many bootlegs of that set it's hard to tell which Amazon listing legit.
I have a real copy (4 CDs + 1 mini CD + thick booklet, poster, etc) but the cover is different. I'm not sure of the silhouette variant was a first press bonus or is simply the cover of the bootleg.
Regardless, that set has a lot of dialogue and alternate takes of tracks. It's awesome but is only a small section of Bebop music.
If people want everything, as I did, you need a legit copy of that set PLUS:
OST1
Vitaminless
OST 2: No Disc
OST 3: Blue
Music for Freelance - this is a remix disc but still required owning in my opinion
Ask DNA - movie EP
Future Blues - movie OST
Cowgirl Ed - bonus movie disc
Tank! The! Best! - compilation with some game music
Space Bio Charge - Seatbelts / Kanno retrospective that has mostly old stuff but I think has retakes / variations. Own it, still not sure.
I believe that covers everything unique... At the very least it's what I own.