In RB various settings are stored in various places. There a couple ini and config files that store a lot of info also.
Then the seq file settings that get loaded per song...

Another trick if you want to have RB open with a certain setup; Save a seq file (with these settings) as $OPTIONS.seq
RB loads this file when it opens if it exists.

You can also save various Templates with various settings .. they get stored in the X:\Realband\Templates\ folder. They are just quick easy setups to load.

I found these handy at a project level.
Different projects used different Templates.

Make your sound your own!
.. I do not work here, but the benefits are still awesome