Sorry to say it can be a needle in a haystack search. One of the more reliable ways is to start with half your song collection, load it in the game, and see if there is trouble. If there is, that's where your problem is; otherwise it's in the other half. Then take the problematic half, split it in half again, and so on, until you've narrowed it down to the specific song.
Then, if you're as lucky as I am, you fix that song, load everything up again, and then have it fail on another song you have to look for.
Another way is to add a few songs at a time, say a dozen or so. This way can take longer if it's just one or two problematic songs, but can also be faster if you have more potential suspects.