However, you can find several legitimate "free" alternatives and segments online: SoundCloud
The famous grammar book Zichtbaar Nederlands offers free vocabulary MP3s on their website for the first three chapters. While not De Opmaat , the vocabulary overlaps 80%. de opmaat audio free free
De Opmaat Audio Free stands out from other free audio processing software due to its: However, you can find several legitimate "free" alternatives
If you bought the book second-hand, the original code has likely already been used. Digital License de opmaat audio free free
If you are looking for free ways to supplement or access audio: