Due to licensing restrictions, Digital Performer 8.0 and 8.01 do not have built-in .mp3 export functionality. To enable .mp3 export in DP8, simply update to the latest version of DP8 on our downloads page. After running the update installer, quit and re-open DP8: you will now be able to export .mp3's! To enable .mp3 export in DP versions 4.5 through 7, please see this Tech Note.