I have a song I made up using 32 bars of 4 choruses which plays normally. Simple enough.

I also normally use "Audio, Export Song As An Audio File" and have it create a separate file for each track.

Funny thing is that the rendering produces a good MP3 file for the Piano, Drums, Guitar and Strings but I get the following error messages when it is rendering Bass and Melody. Those are rendered as WAV files and are not compressed to MP3 files like the others.

I am using the standard CoyoteWT synth for midi.

Rendering succeeded! [2021.813.0, 12/29/2020 4:30:43 PM]
Audio Conversion Error: MP3 conversion failed. It is possible that you do not have any ACM codecs installed. [2021.813.0, 12/29/2020 4:30:43 PM]
Audio Conversion Error: Media Foundation failed to convert to .mp3. Trying alternate conversion method... The error number is -1072875847 [2021.813.0, 12/29/2020 4:30:43 PM]
Audio Conversion Error: MP3 conversion failed. It is possible that you do not have any ACM codecs installed. [2021.813.0, 12/29/2020 4:30:23 PM]
Audio Conversion Error: Media Foundation failed to convert to .mp3. Trying alternate conversion method... The error number is -1072875847 [2021.813.0, 12/29/2020 4:30:23 PM]

What exactly is the ACM codec that BIAB seems to think I may need?

LAME?

or some other.

Using build 813.

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BIAB2025
Windows 10 Pro
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