Apparently, you no longer have the device that they were made on? Do you recall what speed they were recorded on (78rpm. mabye?) obviously, you will need something to play them back on, before considering copying them. You may get away with an actual 78 rpm. record player, (the old kind...not a modern turntable with a 78 speed control). Did this device use a synthetic or flexible stylus? I recall someone else who had the same issue, & those devices were large, bulky & combersome to use, thats why that "technology" was short very short lived. If you cuold even locate one nowadays, I'm sure it would be expensive. Check out antique dealers on E-Bay or antique music collectors, they may know...