I'd like to have my iTunes library automatically synchronise with a folder on an external hard drive. At present, I can add a folder to iTunes, but if I then add new music to this folder, it doesn't show up in iTunes unless I manually drop the files into iTunes. Similarly, music that I've deleted doesn't automatically get removed from iTunes.
I understand that there is a 'Automatically Add to iTunes' folder, but the folder that I'd like to use is not on my internal hard drive.
Are there any solutions out there that will force iTunes to compile its library based on the contents of a folder that is not located on the computer itself?