These are technically pirated copies. While the community is helpful, these links get taken down fast. If you find one, download it immediately, but consider supporting the authors when you can.
: Their "Nicos Weg" series is a widely respected free resource for B1 learners. studio d b1 audio free download
Free (Tax-funded).
For immediate listening without a direct file download, these YouTube playlists contain the full audio content from the Kursbuch and Übungsbuch: These are technically pirated copies