MP3 Mirror
There is a new compression mode that compresses music to FLAC and MP3.
The MP3 files are hidden and don't play or get backed up but there is companion function "Export MP3s" in the Playlist Menu that will export the hidden MP3s to USB - this is useful for sending music quickly to an MP3 player or USB storage for playback in the car for example.
The compression function will convert WAVs and previously converted FLACs to hidden MP3s - but it is very very slow. What you end up with is a collection of FLACs and a hidden mirror copy of them as MP3s.