Thanks for the upload! FYI: The reason why it works on your phone but not other desktop media players is that it's not quite "standard" AAC, but rather a variant called "USAC" which is a bit more efficient for speech. As usual, compatibility for for such things can be really slow to roll out, but both Android and iOS have supported it for a while now. More info: https://en.wikipedia.org/wiki/Unified_Speech_and_Audio_Coding Also, FYI: `.m4b` is technically the best choice of file extension to use for audiobooks. `m4a` works perfectly fine, but `m4b` simply lets the player know ahead of time to check for extra metadata (e.g. chapter markers).

That's the weird part it's the direct download site that does it m4a. Reincarnation as a death God uses a different DL site so it came out m4b. Smartphone actually came out as mp4 for some goddamn reason assassin used rapid gator that's why I came out as a M4B. The USAC makes sense. Weirdly enough and works on Windows Media Player for some god-awful reason.

Wow, that is surprising that Windows Media Player was able to handle it. FYI: In such instances, you can literally just rename the file to change the file extension from `mp4` or `m4a` to `m4b` and it should work file - no need to convert the actual files. `m4a` and `m4b` files are just `mp4` files that use the video track to store the cover art.