Whenever I download files from my favorite sites, I like to have OS X ask me where I would like to save it. I was wondering if there was a way I could have a file automatically saved to a location (folder) bases on what type of file is being downloaded.

For instance, when I download music files (MP3s), I would like them to download into my "Auto Add to Itunes" folder. Or if it's a MP4/AVI file, I'd like it to download to my "Flicks" folder.

Is this something I can script via Automator?