Q: Is there an effective data recovery program for iPod Touch?

iPod Touch Data Recovery - Recover iTouch Music, Photos & Files

Talk to the developer. Be sure you have the Windows versions.

Wondershare Dr.Fone for iOS: iPhone Data Recovery - Wondershare Official

It will depend on whether your computer or any recovery program you use is able to read the iPod contents.

Check out the instructions/suggestions here.

Music from iPod to computer (using option 2).

There's also another method. I've successfully tested this across several different Windows PCs.

Open iTunes and select edit/preferences/advanced/general. Put a check mark in the box marked "copy files to iTunes music folder when adding to library" and also "keep iTunes music folder organized", then click 'ok'.

Connect the iPod whilst holding down the shift/ctrl keys to prevent any auto sync, and if you see the dialogue window asking if you want to sync to this itunes library, click 'no'.

Then go to file/add folder, open 'my computer', select your iPod and click 'ok'.

The music files should transfer to your iTunes.

If this doesn't work (and it may not because officially it's not supposed to), there's Yamipod. This is a free program that transfers music and playlists etc from iPod back to the computer. However, it does not transfer playcounts/ratings etc.

The above methods may depend on what version of iTunes you are running.

If none of these methods work, try CopyPod