Hi Stephen, I don't know about the wav or au files, but if you're looking for a tune you might try this. G/C/G/Em/Am/D7/G/C/D7/G/D7/G, I hope that helps. Jonny Todd would be considered a Forebitter or a Folks'l song instead of a sea shanty which would've been used while woking, with crew singing back a chours to the shantyman.