Is the audio cable 3.5mm the only cord I need for the Wizard?
Yes, the only thing required for the software and the whole procedure is a 3.5mm cable audio because the software gets the data from the audio player through the cable and the Line In available for your sound card.
You can also check the manual of the application using the following link to see the requirements and the procedures for audio capture and conversion: http://www.cassette2usb.com/WizardManual.pdf
