Originally Posted By: justanoldmuso
..i love being able to use flac for recording and playback and would be a very happy bunny if biab had the option to save a genned trak as flac...

If you are using flac in Reaper, you can either use the track injector to give you flac tracks instantly by batch converting the RT RD source files to flac or you can get Reaper to batch convert the folder you save the wav files to from Biab export. In the Reaper's Save dialog you have a Convert Media option to flac.
You should be able to script it to do it all automatically and replace the source wav currently in the project with flac and delete the wavs.