I have all of the official "Free" releases on CD and the single version is 3:40. The Album version is 5:32 and can be found on the 1970 release "Fire and Water" I haven't seen any longer than that other than perhaps live versions
"Orange" CD scan looks a bit like mine but my copy is not quite that orange. I had to return a lot of my "PDO" manufactured CD's back to the manufacturer as they had oxydized and turned orange. They eventually became unplayable. At the moment, this one still plays OK.
I don't think that this compilation represents the best of Free - no I'm a Mover, Woman, and a few other that I could mention. This seems to focus on the more commercial pop side of things.
I also prefer the original mix as this is too "clean", that "dirty" sound that Free had has been lost in the mix. Disappointing.