Thanks for your response.
Never came to my mind that it could be illegal in the first place. It's my own DVD and I just want some tracks on a cd for practical convenience: have the music available when playing with some friends in a space where there is no dvd player.
At this very moment I realise I can import the track as video into i-Tunes and than drop it as such in my i-Pod (video). Not sure it will work but will try anyway.
Still curious though about my question being illegal, so looking forward to a reply of one of the mods.