Toonz is one of the massive 'enterprise' animation software suites, and it used to have a price to match. But frame-by-frame cel animation - which involves weeks, months, years of tedious drawing - has been comprehensively disrupted by upstarts like Anime Studio ( http://my.smithmicro.com/anime-studio-pro.html ), which uses bones and inverse kinematics to produce quality animations quickly and easily. Then there was…
The file is a .sit archive of the mac version of the program. I was unable to expand it with stuffitexpander on windows, and since it's the PPC version it will not run on my Mac. (might try rosetta)