Unsynchronized lyrics field issue

Recently I discovered a lot of my music has the UnsynchedLyrics tagged as XXX| and now won't show correctly on my older ipod. Can I script this somehow to check the USLT field for the XXX value and replace it with ENG so it will work? I'd hate to fix it all manually.

Create an action (perhaps (quick)) of the type Replace for UNSYNCEDLYRICS
Search string: xxx||
Replace with: eng||

That can work. Thanks!