# "400: Bad Request" response when requesting some audio files

**URL:** <https://forums.plex.tv/t/400-bad-request-response-when-requesting-some-audio-files/742407>\
**Category:** Dev/API Corner\
**Tags:** server-linux, ios-legacy\
**Created:** [September 11, 2021, 6:07am UTC](https://forums.plex.tv/t/400-bad-request-response-when-requesting-some-audio-files/742407 "2021-09-11T06:07:08Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![thatsnomooney](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/thatsnomooney/32/200502_2.png) [@thatsnomooney](https://forums.plex.tv/u/thatsnomooney)\
**Post date:** [September 13, 2021, 2:54pm UTC](https://forums.plex.tv/t/400-bad-request-response-when-requesting-some-audio-files/742407/3 "2021-09-13T14:54:04Z")

</div>

I’m seeing this issue on Bookcamp and Chronicle, however I’ve got no workaround at all. None of my M4B based files are showing a bitrate for the overall media (they have one for the media part) and they just refuse to play.

I’ve tried removing the internet upload speed limit (in fact I never had it set), but it doesn’t resolve the issue.

---

_[View the full topic](https://forums.plex.tv/t/400-bad-request-response-when-requesting-some-audio-files/742407)._