Ok, so the TB of music files isn't slowing me down? then what is? my iMac has become immensely sluggish. this is of course off my topic, but it's equally important to me!
I should have spoken more precisely. Having a large number of files on your hard drive
can slow down your computer if your boot drive is almost completely full (as in <5% free space) and you consistently run more programs than your installed RAM can handle. If you've got a TB of music alone, it
is possible that this is your problem. How big is your HD? How much free space do you have?
Otherwise, I'd take a look at recently-installed programs. Did you notice a sudden slowdown after installing anything, or has it been more of a gradual creep? Try clearing out Safari caches and history.
You should also make sure your software is up to date. And you may like these tips, too:
http://lowendmac.com/eubanks/07/0312.html
i still don't know how to backup the iPod files TO iTunes like you suggest. The link is helpful with iTunes files. I added all/MOST of the files on my iPod from an external disk, and NOT from an iTunes synch. now i want to back up to that external from the iPod. i cannot see myself spending the time i just put in obsessively organizing the ipod again.
I guess I'm slightly confused about your setup. How did you get the files onto the iPod in the first place if not through iTunes? Did you know you can have files on an external hard drive AND in your iTunes library? I find it quite a bit easier to keep the files on an external drive, point iTunes that way, and then do all my organizing in iTunes; that way if I ever have to restore the iPod, I can just re-sync the same organizational pattern I already had.