You can download the Minna no Nihongo Shokyu I (N5 level) listening audio for free directly from the official publisher, 3A Corporation
If you just want to listen on the go without downloading large zip files, several platforms host community-uploaded playlists that match the textbook lessons: minna no nihongo n5 listening cd download hot
If you get your hands on these files, don’t just press play. Here is the viral study method: You can download the Minna no Nihongo Shokyu
Minna No Kyoushi: Offers a dedicated JLPT N5 Listening Practice Course with over 100 exercises, including dialogues and comprehension quizzes. including dialogues and comprehension quizzes.