Importing music and video already on your computer
If you have audio or video files on your computer, you can import them into iTunes so that they appear in your iTunes library.
If you have an iPod, you can add music and video to it only by using iTunes. To add media from MusicMatch Jukebox or Audible Manager to your iPod, you need to first import it into iTunes.
Here are ways to import files into your iTunes library:
Choose File > Add to Library, and locate a file or folder to add.
Drag a file or folder from the desktop to the iTunes window.
By default, adding items to your iTunes library places a pointer to each file in the iTunes folder; the original file remains in the current location. For information about copying files to the iTunes folder instead of referencing them, click this link:
If the file is an unprotected WMA file and you have Windows Media Player Series 9 or later installed, iTunes makes a copy of the file and adds it to your iTunes library. The original WMA file remains unchanged. You can’t add protected WMA files or protected WMV files to iTunes.