FairUse4WM Works
I can confirm that FairUse4WM works in stripping the license from a DRM'd music file. I just tried it with a Yahoo! Music Unlimited file and it took it from this:

to this:

Now, I have no intention of stopping my subscription to Yahoo! Music Unlimited (for which I have professed my love on every possible occasion), and my portable music player and my networked music player both support PlaysForSure subscription content. So why would I even bother with this program? Because more than half the time it's a complete nightmare getting my Roku Soundbridge to play subscription content. PlaysForSure my ass. I'm pretty sure it's the fault of the Yahoo! Music Jukebox, but it's so hit-and-miss getting a song to play on the Roku that I'm tempted to use this program to un-DRM songs that I know I'm going to want to play. It's really frustrating to hear from Jessica (who's turning four next week) "Daddy, let's hear the Yeah Yeah Yeah song!", followed by me trying to play it on the Roku, having it not finding the song, rebooting the Roku, restarting Yahoo! Music Jukebox, trying again, only seeing half the songs, rebooting the Roku again, finally finding the song, only to have it timeout trying to acquire the license.
I just want to be able to do what I'm supposed to do, and if FairUse4WM will let me do that for personal use, then I have no qualms about using it. Thank you, FairUse4WM people!