Hi! I got hooked on the trial from Arcadetown... oh, man, hooked But I wasn't crazy about buying from that source. Just personal reasons. If I purchase the game from another source, will I be able to transport my village to that game, or are the files source-specific?

It's hard to say. Some are compatible, and some are not. As long as you back up the savegame files first, you can always recover. If you're playing The Lost Children, you can follow the procedure in this post.