Can I move an iTunes library from Comp1 to Comp2 through Home Sharing? What happens with the first sync? What happens to 3rd party app data (specifically, game scores/levels)?

Question

I need to move an iTunes library from Computer 1 to Computer 2.  Can I do this through Home Sharing, by dragging and dropping library items from one to the other?  The library consists of iTunes purchases, home shared items and music/movies from our personal collection.  Both computers have had all the accounts authorized, so I don't anticipate an issue there.  I'd like to do this so that my son's ipod is impacted as little as possible -- specifically, his game scores/levels and other 3rd party data remain intact after the 1st sync and the organization of his icons remain intact.
Is there a way to do this smoothly and easily, protecting his ipod data/organization?

Answer 1

Sorry, I obviously wasn't clear. If you replicate the library from Computer 1 to Computer 2 by copying it, then all will be well. I routinely sync my iPhone and iPad both at home and at work using a single library that I migrate between the two locations via an external drive which is kept up do date using SyncToy.
Backup the iPod touch on Computer 1.
Copy the entire iTunes folder from Computer 1 to Computer 2, replacing any existing iTunes folder on Computer 2.
Check that content is accessible in the migrated library. (Won't be a problem for a standard iTunes library where all the content is inside the iTunes Media folder which in turn is inside your iTunes folder).
Connect iPod touch to Computer 2.
Sync.
In the unlikely event that something goes wrong (it won't) then you can connect the device back to Computer 1 to restore it.
Note device backups are not stored within the iTunes library and stay on the machine on which they were created. It is theorectically possible to migrate them but there isn't really any point. Once you have synced the iPod with the copy of the library on Computer 2 then Computer 2 will make its own backup of the device.
tt2