Listening mp3 songs/albums in the car

Today I bought a free youtube to mp3 converter 1 year subscription for 23.75 euros, it works ok...
Transfer songs from youtube to mp3 format and the radio recognizes it.

Even if, for example, you could separate one huge video with songs into individual songs, that would be great,but I don't think it supports it...
you can use Audacity to cut up the songs into individual tracks

I haven't used it but it should work like most audio programs like SoundForge that I use.
You would highlight the section of the song you want, copy it and create a new track and paste it into the new track and then save it.