So do you download to the main "Disney audio" folder and then move the files to their "land" folder?
If you do, your client will only look in the folder that IT downloaded to (say, "Disney Audio"). If the file is now in another folder (say, "Frontierland"), as far as the client is concerned, it's no longer on your PC. The client will ONLY look in the folder it downloaded to and will not search for the file (and that can't be changed anywhere. Where it downloaded to is fixed forever.
There is a way of getting it to find it again (set the default download folder to where the file is now, redownload the torrent and try and download the file again. The client will look in the folder you specified and, if it finds the file, will go through a "checking" routine (to make sure it's the same one), and, once dine, will start seding (no, it won't download it again as it can see it's already completed).
With Azureus, there is a warning that files will be overwritten (they won't be) so you just accept it.
Phew, hard work. Hope you can follow all of that.
I would just leave all the files (if you have room) in the download folder and copy them to your named folders. That way you can still seed.
An external HD is very handy for this.
Do remember that Mousebits doesn't care if you seed or not (but it does mean more people can download and it's a nice thing to do if you can).
