First it's important to understand that the distributed get_flash_videos differs from the version you'll find in the subversion repository. This is to make distribution easy (just one file for people to install, the update mechanism can only update the one file, etc).

However it's obviously easier to develop on if the code is modular. This means adding a site (see AddingSite) is just a matter of adding a site specific module. The code can also be run in either form, so that there is no need to generate a combined version while developing.

These combined versions are generated by a Makefile and the script combine-perl.pl, generating them is just a matter of typing make.

When you're working on get_flash_videos, please try to keep the "just works" nature of the script. We mostly just want the script to be given a URL as a parameter, and then "just work" - options shouldn't be necessary for normal usage.