If you're curious, here's how I'm working out. Basically, I set my dropbox folder to be an intermediate folder, not my autoload folder. I suppose you could do all this just in your autoload folder, but I was trying to avoid causing any complications. So I upload a torrent file from my phone to my dropbox folder. Then on my pc where uTorrent is running, I have Belvedere running. If you haven't heard of belvedere, it's just an automated file management tool. You can use it to move around and rename files on a schedule or whenever files that meet certain specifications are present. You can get it from lifehacker.com, here:
Belvedere Automates Your Self-Cleaning PC
Then in Belvedere I have two jobs running. First you have to tell Belvedere where you folder is. Then on that folder you create two rules. The first rule is to append a ".zip" to the end of any .torrent files in the folder. Basically the settings say:
Type [fullname] just like that. [fullname] is a flag in belvedere telling it to just leave the filename the way it is, and add ".zip" to the end of it.
Then the second rule is to run the zip script. Before you build this rule, create a .bat file with the following in it (just a text file with a .bat extension):
You can see that all this script is doing is calling 7zip, and extracting the file, and moving it to D:\Autoload, which is my autoload folder, obviously. The "%1" is a parameter that's getting passed from Belvedere. Don't worry about it, belvedere will handle it for you. Here's the job I set up in Belvedere:
That unziptorrents.bat file is the bat file I just mentioned. So basically, here's how it all goes: say you upload a torrent called "385JDH9JDI59E3JTLOI9I3HJ.torrent" to your dropbox. Belvedere will see a file ending in .torrent, and it will automatically rename it to "385JDH9JDI59E3JTLOI9I3HJ.torrent.zip". The belvedere will then see the zip file which triggers the second job which simply calls your bat script with the name of the file passed to is as the first parameter (the %1 in the bat file). The script will unzip the file and place it in your autoload folder, then automatically delete the zip file.
And that's it. And if you have uTorrent set to automatically delete torrent files, then you end up with no files hanging around anywhere.
Sorry, it sounds a bit convoluted, but it is the only way I could figure out to use my phone to start torrents on my pc remotely with dropbox. If you want to try it, it's much easier than it sounds, let me know if you have any questions.
And sorry, I just realized this post is 10 days old. If you've already solved this, let me know how you did it!