If not an actual APL file, then perhaps a similar file format could be useful - almost an "anti-playlist" file format! Any other comments!
I thought about this in the beginning wrt to mp3 files playback, since that's were my use of cue is. It appears to me after playing with FB2K, there is no need for APL with mp3 or any other media for that matter. FB2K can use just the mp3 and the cue or any media+cue because it has a database that understands cue files.
APL is good if used with a standalone player that lacks a library/database that can understand cue, so individual track information (+ any AA) is stored in APL. APL represents an individual track from a big APE file.
With mp3 or other media, could AA information be stored in the CUE enclosed with appropriate comments ?
So one could pick a track out of an album in the library and queue it in a playlist, MC would understand its start & end from a cue, and read up to the track start position and play it. This probably would require modifying the various decoders to understand that a track from a cue has been requested rather than an individual track.
If MC can understand cue files, does it follow that APL is redundant ?