If you record the tapes to your computer to burn to cd or just play with various sound machines, make sure you record both channels left and right seperatly. A lot of people just record into their computer using the microphone jack, this jack is only mono NOT stereo. You will need to record using the line in or record left and right seperatly using the mic jack or you will notice that you hear the same thing from both speakers or headphones..
It's easy to do using jacks and cords from any radio shack but do a test and listen to it back to make sure left and right are recorded correctly instead of just one channel..