The MASTER page allows you to set certain 'global' parameters such as velocity, pitch bend and tuning while the CONTROL PANEL allows you tweak the sound with controls optimised for the sample set. For Nebulae, the EFFECTS page allows you to add phase shifting, chorus and reverb in variable amounts.
The user's guides are available here...
NEBULAE
TAURUS
Both are available now and the same deal for existing customers - drop me a line and I'll arrange a new download for you (if you bought either within the last week or so, though, try the link on your receipt - it might still be active).
Cheers,
Steve