The "Shepherd Me, O God" investigation continues

In August I blogged about something I thought was strange: the use of Marty Haugen's tune for "Shepherd Me O God," his setting of the 23rd Psalm, as background music on multiple episodes of 48 Hours. No scandal broke as a result of my posting, but I'm following up anyway, because now I have evidence. Tonight I turned on an episode of 48 Hours: Hard Evidence (the repackaged reruns that air on Investigation Discovery) about 20 minutes in. Before long, there it was: "Shepherd Me, O God," playing completely incongruously in the background.

The episode is titled "Deep Secret." You can watch it on the CBS website. But for our purposes, just skip ahead to 41:18, and you'll hear it, played on a piano, verse and refrain. There are some embellishments, but it's unmistakably Haugen. (For comparison's sake: here's "Shepherd Me, O God.") If you watch to the end, you'll see lots of credits for outside footage, but no music credit aside from "Music composed by Richard Fiocca." (He wrote the theme music, according to his website -- which you shouldn't visit, unless you like websites that automatically play music and don't even have a mute button.)

So: what gives?