A bit late to the Rigelian party as I don't follow AudioCircle that closely, but I have purchased 1.2.4 version, and it is a wonderful improvement to previous interfaces for using the Bryston digital player. Composer sort is fantastic, since I have never had this it has shown up many inconsistencies in my composer tagging, but this is my fault and easily remedied with a spare 30 minutes sometime. As Krutsch noted the Artist sort might be a bit nicer if we could populate a thumb with an artist image - perhaps do the same as for album art, but have the user indicate that a "artist.jpg" file in the album folder is to be used for Artist image? I assume the few populated now are coming from Gracenote?
My only usability issue is that the Queue process is not intuitive, and I cannot figure out how to add a 2nd album to an already playing queue. If I go into an album track list, hit the play button, that album plays. Go back to the cover view, long hold on a new cover for adding another album, and the 5 options appear. The button "Add at End" would seem to be what I want, but it does not do anything, the queue stays as it was when I selected the first album. This is no different if I had selected the first album also with a long hold and press "Add next and Play" - I still can't add to the queue. (using an iPad Air... latest iOS).
A big thank you to Berrie, and also James T., as from post #1 I take it that Bryston was behind this Mpad revival - a very smart move.