MP3 not supported

@Maks5EE3 I have had the same problem. I use audio library off of youtube that always downloads in MP3 format. Does anyone know if you can export in the usable MP4 format from audio library or will the MP3 files have to be converted?

Could you please post more information about the type of computer you are using, what OS version, and what specific version of Premiere Pro Beta?

Note: if you are using the new Premiere Pro Beta for Apple Silicon on one of the new M1 Macs, MP3 is not yet supported. It will be in a future version. Take a minute to read through the announcement post on what is currently supported and what is still in progress: https://community.adobe.com/t5/premiere-pro-beta/discuss-premiere-pro-on-apple-silicon-m1/td-p/11691346