I've been tasked (by my grandson) to help connect a vintage piano keyboard to his laptop. It's an 80's Casio with an analog output (line out). Is there a relatively low-cost device to do this? I've considered making a 100:1 divider to reduce the line out (about 1 volt) down to 1 mv (mic in) - I believe the mic input to a typical PC has a built-in A to D converter. If I get any positive answers to these questions I'll have lots of additional questions about input, output jacks, cables, audio software, etc.