The Internet Archive is a digital library. While you must be careful to only access pre-2003 editions (which may be out of copyright or have relaxed terms), older versions of the Longman Course (e.g., the 2001 edition for the old CBT test) are sometimes available for borrowing.
Once you have legally acquired the audio files, don’t just listen passively. Follow this study protocol:
The audio component for the Longman Complete Course is critical because the TOEFL is largely an aural exam. The audio files cover three main sections: Longman Complete Course For The Toefl Test Audio Free
If you already own a used book without a code, Pearson sells a standalone access code for the online audio and interactive practice for roughly $25–$30. Search for "Longman TOEFL iBT Online Access Code" on the Pearson site. This gives you 12 months of legal, high-quality streaming audio.
Please verify which version of the Longman book you have: The Internet Archive is a digital library
If you have the PBT version, I highly recommend upgrading to the "Longman Preparation Course for the TOEFL iBT Test" or the "Deborah Phillips" edition to ensure the audio matches the current test format (recordings of university lectures, not just short dialogues).
Pearson often provides sample audio for the Longman course on their dedicated student resources page. While you may not get the entire 8-hour audio library, you can often download: Please verify which version of the Longman book you have:
How to access:
Note: This is technically free, but it may only cover 20-30% of the book’s total audio.