No high tech is needed! I transfer from 78rpm and cylinders to analog often with great results. First thing is finding the original key. Then coat (damp using a small sponge or powder-puff) the 78 with a mild solution of dish detergent. Play the 78 at any rpm even 45rpm while you record it on to tape. Then with a pitch adjustable machine, Sony, JVC, Marantz, etc. change back to the original key and dub away. You can play around with the various Dolby filters but the dish detergent does the trick and the pitch is perfect enough for practice of fiddle tunes.