Adobe Font Folio isn't an installable piece of software. Rather, it is a DVD (or DVD image) containing the Adobe Type Library. One doesn't run an installer from that disk, but rather, copies or installs the fonts from the disk per your operating system's standard procedures.
Although a one-time download link may be provided for customers who license Adobe Font Folio on-line, for obvious reasons, we don't make a permanent download link available to the public.
Quite frankly, assuming you had originally copied the Adobe Font Folio disk (or disk image) contents to you computer's hard drive, the best solution to your problem is to retrieve the files from your system's backup. You do back up you computer, don't you?
Otherwise, if you licensed the Adobe Font Folio directly from Adobe, you might try contacting Adobe Customer Support by phone and explaining your situation. They might be able to assist you there. This forum is not Adobe Customer Support and as such, we cannot provide further assistance here.
- Dov