Only one field was missing: Album artist. For this test I just plugged in my Droid 4 into the desktop computer and used Windows Explorer on the files directly. I just noticed that Publisher is left empty, but apparently ICS does not need it to recognize the file as a valid file.
For what it is worth, my music is classical music, but came up a "Rock" .... strange .... so I right mouse clicked the first of the dozen tracks, it was selected, used control-A to select all tracks, and then opened Properties. With this setting, only "General" and "Details" tabs showed. I selected "Details." The title showed as (multiple values), which I expected. "Album Artist" was blank so I filled that in (typically, with classical music albums, the artist for each track in the album is the same -- but in this case I didn't care ... "XXXX" would have done the trick ... I think it just needs a non-blank value). Also also changed the Genre from Rock to Classical, and then clicked [Apply] at the bottom.
For what it is worth #2 ... the Publisher field (at the bottom of "Details" was blank, and I left it blank. Apparently ICS does not need that, because all 12 tracks are now showing. "Subtitle" is also blank, "Rating" is left with empty stars (i.e., not rated), and there are no comments. Each track is has its on # value (1..12), so it appears as (multiple values), which is to be expected when all the tracks are selected.
Thank you so much for your help. Problem appears to be solved!