Feature request: Remember last encoding for selected file type.

[Freonpsandoz]

I generally convert WavPack/MonkeyAudio/FLAC to WAV files for trimming and editing, then back to FLAC for archive and playback. I never convert FLAC to FLAC or WAV to WAV. It would be nice if the converter remembered the last conversion used for each file type, instead of just the last conversion used.