Hey, let me start by saying that uTorrent is a program mainly used for illegally downloading files to your computer, which is never a good idea. That's not to say that it is always illegal, just the only times I've heard of people doing it, was for illegal use, which you should talk over with your friend. It is always a bad idea to pirate software over the internet. Now, on to my assistance.
If the files you downloaded are taking up too much space, than here is what you can do to delete them.
First, quit uTorrent. On a Mac, closing a program is not the same as quitting it, so here is how you quit. Go down to your dock (the little bar at the bottom, or the side of your screen with shortcuts to all of your applications) and select uTorrent (the green circle with the silver outline and the white "u" in the middle). The grey status bar at the top of your screen should show an apple logo, followed by "uTorrent, File, etc." If it says a different program name in the place of where "uTorrent" should be, try double clicking the uTorrent logo again. After that, hold down the "command" key (the key on either the left or the right of the spacebar) and the "q" key. Let go after a second.
Once you have quit Utorrent, open finder, (the half blue, half white, square face on the left side of your dock) than hold the option key, the command key, and the L key. This should open your downloads folder. Select the files you wish do delete, and drag them to the trash, (the waste basket on the right side of your dock) than open the trash and click the empty button. These files are now permanently deleted from your computer.
I would like to give you more help as far as what to do with the files you do want, but I have to know what they are. Email me at
[email protected] if you need more help.