How to get Itunes on Mac to see all of the music

Here's what finally worked.

1. Copy the file "iTunes Music Library.xml" from Windows to somewhere on your Mac, like your desktop.
2. Change all references to network location of the audio files to something the Mac can understand. For example, all of my MP3 files started with file://localhost//192.168.1.6/music/ So I did a Find & Replace and changed them to the path the Mac mounted my remote music folder: file://localhost/Volumes/Media/music/
3. Clear out the iTunes directory in ~/Music.
4. In iTunes > Preferences > Advanced, uncheck "Copy files to iTunes Meida folder when adding to library".
5. Then import the XML file from step 1 into iTunes by File > Library > Import Playlist.

The "Re-creating the iTunes Library file" section near the bottom of this article helped.

You have to go into advanced preferences in iTunes and you should see a box displaying your current iTunes Media folder location, with a button prompting you to change it.

If you select your folder there it should work for you.

EDIT: A better way to move your iTunes content, is to move your entire iTunes library (you ~/Music/iTunes folder) into a new location. Then close and reopen iTunes while holding the Option key, when prompted to choose an iTunes library select the new location and everything should be stored in that new iTunes library folder (you can actually name the folder whatever you would like).