Thank you! What is sb2? (I don't seem to have it installed.) In python I am just invoking swfc from the command line with os.system, so I do not need it on "compile-time" but it is needed to export to SWF. To answer your other question, swftools is a set of utilities for working with swf files and as such are more of a supporting library than an application. The only one I actually need is swfc. I may just bundle your compiled swfc along with my application.