I’ve found lots of links to download the audio for the 1998 edition of this book, but the dialogues don’t match with the 2004 book because they were all updated and expanded for the 2004 edition and I can’t find the audio.
[https://www.amazon.com/Ultimate-Japanese-Beginner-Intermediate-Complete-Reference/dp/140002112X](https://www.amazon.com/Ultimate-Japanese-Beginner-Intermediate-Complete-Reference/dp/140002112X)
I did find this link that has the 2004 audio, but only for the first 9 lessons: [https://sciarium.com/file/3620/](https://sciarium.com/file/3620/)