Arranger is a great feature and, IMHO, the best addition to Cakewalk in the last few years but what I miss the most about about it is that you cannot export sections of an arrangement as separate audio files. I often record live performances into Cakewalk and I need to export individual songs in mp3 format. You can of course export sections one by one or use an external audio editor to cut the recording into sections but it just takes very long time to do.