I bought the Cassette to MP3 system. The software, Audacity, was outdated, but Audacity is free, and I could download a later version at no cost [and Audacity was very helpful]. However, the Cassette plays at twice the normal speed, which makes it useless for either listening or for recording as MP3 music. Don't get ripped off!
We do not sell the software we sold the converter which is not FREE anywhere plus the speed of the recording is set by the user.