Apple's iPod Touch is a popular Web-enabled portable audio and video device that works with iTunes. However, you can add music to your iPod touch without synchronising--or, syncing--the content with iTunes. Because the iPod Touch also functions as a storage drive, you may also load music onto the device using a USB connection.
Connect the iPod Touch and personal computer using the USB cable. Insert the iPod end of the cable into the iPod Touch. Insert the USB end of the cable into an available USB port on your computer.
Wait for iTunes to launch. Open your iTunes if it does not launch automatically. You will need to configure your iPod Touch as a storage device in iTunes before you can add music to the player without using the program.
Click on your iPod Touch's icon in the source pane in the iTunes player's leftmost column. Select "Enable disk use" from the "Options" check box list to activate your iPod Touch as a storage device. Choose "Manually manage music and videos" if you wish to do so and disable your iPod Touch's automatic iTunes synchronisation in the process.
Wait for your computer to recognise the iPod Touch as an external device. An iPod Touch drive or device icon will appear on your computer's desktop or in its file manager.
Open the file folder containing the music files you wish to add to your iPod Touch.
Drag the music files from their original file folder onto the iPod Touch icon. You may also open the iPod Touch icon to view a file folder window into which you may drag and drop your music.
While the iPod Touch's music storage capability comes in handy for transport, please note that you will not be able to play on your iPod songs that you added to the device outside of the iTunes sync process.