Unfortunately, these are only available for purchase on cassette tape. Does anyone know where I could find a digital version of the audio files for this course?
Nissan Business Japanese [https://books.google.com/books/about/Nissan\_s\_Business\_Japanese.html?id=jOTBe0W-MkcC](https://books.google.com/books/about/Nissan_s_Business_Japanese.html?id=jOTBe0W-MkcC)
Nissan Business Japanese Plus: [https://www.amazon.com/Nissans-Business-Japanese-Plus-Text/dp/0844284238](https://www.amazon.com/Nissans-Business-Japanese-Plus-Text/dp/0844284238)