Is it possible to convert .mp3 audio files to .trp format?
Converting MP3 Audio Files directly to HD Video Transport Streams (.mp3 to .trp conversion) should be possible, even though your options are limited. It relates to users attempting to encode MP3 audio to TRP video.
Try using a media editing software or (online) conversion tool, such as SUPER, which should allow users to import MP3 audio and export it in TRP format.