There are several ways to download free audiobooks on photographic memory:

1. Librivox: Librivox is a platform that offers free public domain audiobooks. You can visit their website (www.librivox.org) and search for “photographic memory” to find relevant audiobooks. You can download the audiobook files directly from the website or use their mobile app.

2. Project Gutenberg: Project Gutenberg (www.gutenberg.org) is another platform that provides free public domain audiobooks. You can search for “photographic memory” on their website and download the available audiobooks in various formats, including MP3.

3. Open Culture: Open Culture (www.openculture.com) is a website that curates free audiobooks from various sources. They have a collection of audiobooks on memory improvement, including photographic memory. You can visit their website and search for “photographic memory” to find relevant audiobooks. They provide direct links to download the audiobook files.

4. YouTube: YouTube has a vast collection of audiobooks, including those on photographic memory. You can search for “photographic memory audiobook” on YouTube and find various options. Some channels or users may provide the option to download the audiobook files directly from their video descriptions.

Remember to check the copyright status of the audiobooks and ensure that they are legally available for free download.