Okay. I got the CUE splitter working. I changed that line from .wav to .ape. And I have a cue file that when I add to playing know splits up the file perfectly.
Actually, your APE file is not physically splitted yet. The apparent track files are virtual and consist of stored seeking points.
But how do I store this type of setup in the Library? I tried to import and only the full ape file came in.
You can select the cue tracks in Playing Now and right-click import them. Also, the Auto-Import tool should be able to import cue tracks when the cue file type is selected in the advanced folder specific Auto-Import options (it works for me).
Alternatively, you can convert the cue tracks to physically separate track files if preferrred. Select the tracks in Playing Now and convert with your preferred options (Library Tools > Convert Format...).
However, you'll need to tag and rename the converted files manually because MC has a tagging problem when the source tracks are cue based.