How to convert .m2ts files to .mp3 format.
Converting Blu-ray BDAV Video Files directly to MP3 Audio Files (.m2ts to .mp3 conversion) is certainly possible and should be quite straightforward. It relates to users attempting to extract the audio track (MP3) from an M2TS video.
Use one of numerous currently available video editing programs or (online) conversion tools, such as VLC Media Player or HandBrake, which should allow users to import M2TS videos and export their extracted audio track in MP3 format.