slederman ~ How did you decide to add salt, sugar, and lime juice? All three of these are natural preservatives
. Adding these things can discourage microbiological growth.
Eauchlaire101 ~ If you grow a mold in your must it is probably a aspergillus these do not grow in anaerobic environments
(oxygen free). So make sure that your berries are submerged in liquid or use and airlock. If you use an airlock make sure that the berries do not block it because then it will explode.
Also, some aspergilluses contain some interesting chemicals that can get you sick
. I'd recommend discarding any of the fruit with mold growth unless you know just what you're growing (like aspergillus oryzae