Convert MP3 to BIK

Converting MP3 Audio Files directly to Bink Video Files (.mp3 to .bik conversion) should be possible, even though your options are quite limited.

It appears that your best option is using the Freemake Video Converter, which should be capable of converting .mp3 to .bik.

Alternatively, you can try some available online conversion solutions, which claim to be capable of such conversions.