You’ll need a bit of patience and some spare disk space to do this properly - also note that I did most of this on a Mac, so if you’re on Windows your mileage may vary slightly. If you don’t do this, you’ll have a tricky time merging the two folder trees together (unless they both use the same custom sorting scheme, but you’ll be lucky). Due to the difference in i Tunes library versions, the first thing I did was update the older library to the latest schema.
I’m not sure if there are actually any significant differences between 7 and 10, but I didn’t want to make things any harder than necessary.
If the Advanced menu says "Turn Off Home Sharing" when you click it then Home Sharing is already enabled. Enter your Apple ID and associated password and click “Create Home Share.” Repeat these first four steps on each computer from which you want to copy content. The names of the other computers on which you have enabled Home Sharing will appear here. Click the first content category you want to consolidate and click “Import.” Available content categories will vary depending on the contents of that computer’s i Tunes library.
Common categories include Music, Apps, Movies, TV Shows and Photos.
To save space on your hard drive, you might want to delete the original files after you make sure that the copies are in your i Tunes Media Folder.
i Tunes has a feature called Home Sharing that can help you to consolidate all of your i Tunes content on one computer, so long as all of your computers use the same local area Ethernet or Wi-Fi network.
We'll answer several questions here each week, and of course, you can always get help with more immediate concerns from the i Lounge Discussion Forums.
Submit your questions for consideration using our Ask i Lounge Submit Form.
With Home Sharing enabled, you can copy copyrighted content between up to five different computers.
Content without copyright management can be copied as often as you want. Click “Advanced” on the horizontal menu in i Tunes and click “Turn On Home Sharing” to enable the Home Sharing feature on this computer. Click “Home Sharing” under the Shared heading on the vertical menu to display a list of Home Sharing connections available on your network.