random iTunes items pointing to the wrong location
When syncing my iPhone, I am alerted to the error
"Some of the items in the iTunes library, including "We Can Work It Out", were not copied to the iPhone "Chuck's iPhone" because they cannot be played on this iPhone."
A list of items follows. (I wish I could copy this list to a text file or this was accessible via a log in the console, because then I could copy and paste each item into the iTunes search box for further diagnosis.)
These items are unplayable within iTunes (yet have no exclamation point next to them) and they are found to be pointing to alternate paths. By alternate, I mean that for a specific album, tracks 1 through 10 are playable and exist in an iTunes organized folder, while track 11 is not playable, yet exists in the same folder, but the path displayed for track 11's "get info" box is in some random location different from tracks 1 through 10.
So since there is no exclamation mark on these unplayable tracks, attempting to play them results in nothing, not even the iTunes dialog to locate the file. So how do I induce a relink and make these items playable (and sync-able) again?
MacBook Air, OS X Mountain Lion (10.8.2)