Renoise tool to render a project to MP3 using LAME. Comes with a GUI similar to the default Renoise rendering tool.
To use it, you can simply download com.slocknad.LameMp3Encoder.xrnx, extract the content and drag it to Renoise.
In case you're using Windows you don't need to install anything because I included the .exe file you need.
Otherwise: https://lame.sourceforge.io/