Transfer files between iPod touch and your Windows PC using iTunes
1. Install or update to the latest version of iTunes on your PC.
See the Apple Support article Update to the latest version of iTunes.
2. Connect iPod touch to your Windows PC.
You can connect using USB, or if you set up Wi-Fi syncing, you can use a Wi-Fi connection.
3. In iTunes on your Windows PC, click the iPod touch button near the top left of the iTunes window.
4. Click File Sharing, select an app in the list, then do one of the following:
Transfer a file from your iPod touch to your computer: Select the file you want to transfer in the list on the right, click “Save to,” select where you want to save the file, then click Save To.
Transfer a file from your computer to your iPod touch: Click Add, select the file you want to transfer, then click Add.
An alternative way without using iTunes is to use Easeus MobiMover, which is available for PC and Mac.
The link referenced provides a download along with instructions on usage.
I hope that helps, let us know how it goes.