Radboud University has released a massive archive of free listening exercises under a Creative Commons license. While not identical to De Opmaat , the vocabulary overlap is approximately 85%. You can download these as MP3s directly from their website.
While this article focuses on , we must be honest. The full package costs around €25 to €40 for the digital audio license. Consider this: If you spend 40 hours searching for free torrents that don't exist or broken YouTube links, your time is worth more than €1 per hour. De Opmaat Audio Free
This is the most practical source for . Many experienced NT2 teachers have uploaded self-made recordings or excerpts that mimic or directly use the De Opmaat dialogues. Radboud University has released a massive archive of