Disklavier

have been trying to covert cd audio files of piano songs my 6 years
son is learning to midi files so my son can see how songs are played.
am using tall stick"s ts audio to midi 3.20 but it keeps producing
extra notes on the high end, and the filter doesnt seem to suceed in
cutting it out even though i manually set it that way. does anyone
have a good program that can also be set to convert a batch of files,
like and entire cd without having to load and save each file. Please
help. have tried several programs and paid for full upgrades.