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Firefox 93.0 Changing Audible download extension from .AAX to .MP4

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  • 3 have this problem
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  • Last reply by steven_neal

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Today using Firefox 93.0 on my Windows 10 home computer I opened the browser to my Audible library on Audible.com and selected a book to download. The browser download window opened with the book file name but the extension wasn't .AAX but had been changed to .MP4. This did not happen when I used Microsoft Edge nor did this happen on my Windows 10 laptop which was still running Firefox 92.0. Once Firefox upgraded to 93.0 on my laptop I now get the same problem as I get on my home computer.

Audible technical support looked into the problem and found that this change wasn't caused by their servers.

I have discovered that if I change the file extension from MP4 to AAX I can load the audible book into iTunes and sync it over to my iPhone which is able to play the file as an audible book. This indicates to me that the actual AAX file was not converted to MP4. For some reason only the file extension was changed.

I wasn't able to find any setting in the Firefox browser that corrected this problem.

Today using Firefox 93.0 on my Windows 10 home computer I opened the browser to my Audible library on Audible.com and selected a book to download. The browser download window opened with the book file name but the extension wasn't .AAX but had been changed to .MP4. This did not happen when I used Microsoft Edge nor did this happen on my Windows 10 laptop which was still running Firefox 92.0. Once Firefox upgraded to 93.0 on my laptop I now get the same problem as I get on my home computer. Audible technical support looked into the problem and found that this change wasn't caused by their servers. I have discovered that if I change the file extension from MP4 to AAX I can load the audible book into iTunes and sync it over to my iPhone which is able to play the file as an audible book. This indicates to me that the actual AAX file was not converted to MP4. For some reason only the file extension was changed. I wasn't able to find any setting in the Firefox browser that corrected this problem.

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I have this problem too :(

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Chosen Solution

I have this problem too :(

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Apparently this has been fixed. I just selected an Audible book to download and a window opened with the options to either Open with iTunes or save file with .AAX extension.

Thanks to whoever corrected this little problem. I know it wasn't a critical situation as I could always change the .MP4 extension on the audio download to .AAX in the download window or rename the file once it was saved. However it was something that wasn't working and now it is. Thanks!