How to Add New Music to Your iPod via iTunes

1. Open your iPod playlist

2. Open the directory of your file
3. Left click on the file, hold then drag to the iTunes

4. Drop to your iPod playlist

5. Open your iPod tab

6. Click Sync and wait the iPod for syncing

7. Wait until it says "Syncing complete, OK to disconnect"

8. You've added new song to your iPod