Other options includeusing playlistsandmultiple user accounts.
These instructions apply to iTunes 9.2 and higher.
To create multiple iTunes libraries on your machine, go through this:
Quit iTunes if it’s running.

Release the key when theChoose iTunes Librarywindow appears, then selectCreate Library.
In theSave Astext box, enter a name for the new iTunes library.
Select theWheredrop-down menu and choose the folder where you want to store the new library on your box.

SelectSaveto create the new library.
iTunes opens using the newly created library.
you could add new content to it.

In theChoose iTunes Librarywindow, selectChoose Library.
Another window appears, defaulting to your Music/My Music folder.
Choose the folder for the new library and selectOpen.

You don’t have to select anything inside the folder.
iTunes opens using the library you chose.
It will go through thestandard syncing process, using the media in the currently active iTunes library.

The iPhone and iPod can only sync to one library at a time.
Both of those services are designed to sync music to all devices using the same Apple Account.
