Binary package “libmp3lame-dev” in ubuntu bionic

MP3 encoding library (development)

 LAME (recursive acronym for "LAME Ain't an MP3 Encoder") is a research
 project for learning about and improving MP3 encoding technology.
 LAME includes an MP3 encoding library, a simple frontend application,
 and other tools for sound analysis, as well as convenience tools.
 .
 This package contains the development files.