If you are doing this yourself, a few notes. The tape shell is in two parts. Try to find one that is clipped together rather then fused. Look at the holes on the bottom of the tape to see what I mean. I had to dremal out some interior pins to make room for the Pi. Also had to cut a small hole in the side for the power. Please be careful!
Anyway, I love the juxtaposition of an ethernet cable going into an 8 track tape.