Hi!
One way to make it, by default, should be to let the winwin one under a VNC server, and the MorphOS ones with a client...
Or ftp winwin server / MorphOS client...
An other option, perhaps, is to just know the local IP of the disk and browse it with OWB...
An exploration in the FreeBox setup will probably learn something too???
Amigalement!
MorphBook G4 PowaA!