# Cannot tag MP3's from one download source **URL:** https://community.mp3tag.de/t/cannot-tag-mp3s-from-one-download-source/70490 **Category:** Support **Created:** [January 14, 2026, 2:46pm UTC](https://community.mp3tag.de/t/cannot-tag-mp3s-from-one-download-source/70490 "2026-01-14T14:46:16Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![LyricsLover](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/c6cbf5/32.png) [@LyricsLover](https://community.mp3tag.de/u/LyricsLover) #### Post date: [January 14, 2026, 2:57pm UTC](https://community.mp3tag.de/t/cannot-tag-mp3s-from-one-download-source/70490/2 "2026-01-14T14:57:57Z")
Maybe you can start here: > [@How to check files for errors?](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633/4#p-168848-how-to-repair-files-identified-as-corrupted-1): > > How to repair files identified as corrupted? If the file in question is a MP3 file which is reported as corrupted or where the MP3 header cannot be read, chances are it is an MP4 file with a \*.mp3 file extension. This often happens if online services, e.g., to download files from YouTube are involved. Changing the file extension to \*.mp4 might solve the problem. If the problematic file is a WAV or AIF file, re-saving the file with an audio-editing program like Audacity might repair the files. I… Please also tell us, which Mp3tag version you are currently using. --- _[View the full topic](https://community.mp3tag.de/t/cannot-tag-mp3s-from-one-download-source/70490)._