TuneAid is what the authors call an iPod content recovery tool: it allows you to import the library of any version of iPod (iPhone and iPad, too), saving it straight to your iTunes library, or just the folder of your choice.
And so the program provides an easy way to transfer songs from one of your computers to another. You could also use TuneAid as an iPod backup tool. And of course it would also come in very useful if your regular PC was corrupted, and you lost your copy of iTunes.
The program is easy to use, as it looks a little like iTunes already: you're able to sort, view, filter, even play any of your iPod's tunes, then copy the files you need in just a few clicks.
And TuneAid doesn't just copy the audio files alone. It can also transfer fields like Rating, Date Added, Play Count and many others. It'll copy your video files, too. And the program will even detect and remove duplicate files during the copy operation, cleaning up your library as it goes.
Please note, this trial version of TuneAid will copy a maximum of 25 tracks per copy batch.