Just out of curiosity - why not contributing to Hamster filer, instead? It have active maintainer (who still is very glad to accept contributions), have readable and well commented code, etc...

AFAIK, gdizzz, Hamster filer creator, also started with plans of contributing to Filebox, but changed plans after getting severe headache, while trying to get through Filebox source code

Not trying to discourage anyone - it may be just silly to split resources.

/Estel