If you mess up, just move the original back overtop the one you edited.I'm sure there are other ways, but this worked for me.It seems like I should be able to just move my library directory/files from Windows machine to the Mac and have it continue to find my music on the network (the Mac can see the Music share on the WHS just fine), but when I tried this, i Tunes on the Mac reported everything as missing.
If you’re low on space and you have a lot of media that simply cannot be stored using i Cloud, then one great option is to move everything to an external USB drive.
But with one-terabyte external hard drives retailing for less than on Amazon, there are no excuses not to spring for external storage to move that humongous i Tunes library of yours on.
This post takes you step-by-step through the process of consolidating your i Tunes library and moving it to an external drive in a way that will preserve your playlists, ratings and other interactions, so you won’t miss a beat.
I personally never use i Tunes anymore, but I know a lot of people who keep all their music and movies stored on their computer.
I personally find it much easier to stream content from i Cloud and to use i Tunes Match or Apple Music for listening to my music.