Here is a graphical depiction of the audio levels of two FDR audiobooks to explain the problem:
First of all: I am extremely grateful for getting the audiobooks for free but at least one of the FDR audiobooks has erratically changing changes in audio volume; the practical anarchy audiobook. I realize this is a minor problem, that most listeners of the audiobooks might not even consciously recognise and it does not impair their listening experience. But I guess for future productions it might be a thing to consider in my opinion, since it only takes ca. 5 minutes during production to fix the audio volume with a free software like Audacity. It is called: "normalizing the audio level". This is my problem: I am listening to the Practical Anarchy Audiobook on my android phone while driving with Google Maps Navigation activated. To be able to understand the audiobook I have to dial the volume of my headset to the maximum. When the Google Maps Navigation voice tells me to turn, the navigator's voice literally screams in my ears so that it hurts. Here is a short tutorial: http://thebest3d.com/audacity/tutorials/make-louder/audacity-tutorial-make-louder-more-volume-increased-amplitude.html Audiobooks with low audio volume:FDR_5_Practical_Anarchy_Audiobook_LOW_QUALITYFDR_1_AUDIOBOOK_On_Truth_The_Tyranny_of_Illusion Audiobooks with high (good) audio volume:FDR_Book_against_the_godsFDR_Book_the_handbook_human_ownershipUniversally Preferable Behaviour (UPB)
If you send me high quality MP3s of the two audiobooks, I could normalize the two audiobooks for FDR myself and I could send the finished, normalized MP3s back to FDR.