Free YouTube to MP3 Converter Portable (Help)

I am trying to make the above software into a portable version (http://www.dvdvideosoft.com/products/dvd/Free-YouTube-to-MP3-Converter.htm). However I am not to sure what to do after steps 11 in the tutorial https://portableapps.com/node/14868
Can anyone tell me what I should be doing here. I have all the recommended software but I seemed to have hit a snag.