Replacement for "aactomp3" option?

[George Eycott]

That would seem to be the answer to everyone's question - thanks for
pointing it out!

> https://github.com/get-iplayer/get_iplayer/wiki/documentation#custom-
> comma
> nds shows you how to create a GIP preset to convert a file to MP3 after
> downloading and then how to use it on GIP's command line.
> See the section headed "Create a preset named aactomp3 that can be used
> to extract the audio from a TV or radio programme and transcode to MP3
> format at best variable bit rate (VBR):".
> There are instructions for both Linux and Windows.
>