ore profitable for you to tell one
 of your developers to have a look at the source code and ensure the
 required functionality is there, with hands on. The source code is 
 written to be very readable, maintainable and extensible. Just be
 reminded that the free public licenses have restrictions on shipping
 modified binaries but I can give you a cheap personal license to
 escape these. (Such licenses can be obtained in return for tax-deductible
 donations to organisations supporting opensource software).
