You need to know where you copied the files to. Within Itunes you also need to import or add folder to library. It's somewhere within the File menu.


Where are the files located on the old PC. If on a single folder, copy the entire folder to a flash drive, assuming there is enough space. If all over the place, do a wild search for the audio files (MP3, .RA, .WAV...), then copy them to a single folder in your flash drive.

What's going to happen to the old PC. If it's going to the scrap yard, you an try something a bit more technical. Pull the drive out and add it as a second drive to your new PC. You can also get an external case which makes the old drive become an external USB drive. And it's probably cheaper than a high capacity flash drive, but not as expensive as an actual external drive. I would say about $20-30. You can then start cleaning up the old drive and leave the music and other files behind.