It won't delete your library if you turn on the manually manage option with your home computer... but it Will if you adjust thats setting while connected to your work computer. It will warn you first though even after checking the box.
With the iPhone, even in manually manage mode you can not transfer songs from more than one computer to the phone.
Is your work computer a laptop? or your home comp? A work around is to turn on home sharing transfer the song from one comp to the other and synch with your phone.
07-15-2010 01:53 PM