i discovered that the old pulsar 1 device sample player.dev is not protected and you can load in the SDK to see the internal atoms. but, surprisingly, when you open the circuit you son't see any atom! you can see them only in the project explorer window.
anyway, you can take a look at the connections between the atoms.
maybe someone is interested in this fact... honestly i didnt understood a lot... even because it seems you don't have access to the surface, either...
in the surface, the akai program is loaded by a "pep" script, namely
SamplePlayerFileText.pep
which i don't understand how to load and use!
PS: if someone wants the sample player.dev device just ask!