Where can I find Snowtape 1.x for download?

You can download Snowtape 1.5.7 here.

Why do you want to do this? Let's say you have a PowerPC based Mac or still Mac OS X 10.5 then Snowtape 2 won't work. If you bought a Snowtape 2.x license you can activate Snowtape 1.5.7 with it, too.