Ah, yes Rick, I came across your post over the summer when I started using MiniLyrics as, like you, I was looking for a solution that would integrate with MC and download the lyrics when I played a track. Simple. However, we've run into the same issues... (FYI, I'm pretty sure the synced lyrics are in a sidecar file, which is why MP3Tag can't see the tag.) ...and there's no way in hell I'm going to cut and paste all those lyrics (even if half or so of my library is instrumental). I was looking to edit the default Lyrics field so that way I could make it into a computed field that would just pull the lyrics from the unsyncedlyrics tag MiniLyrics creates.
If there is a commercial solution, I don't know: I didn't look for any type of standalone app because what complicates things a bit for me is that I run my server headless. There's just a box in behind my stereo/TV cabinet that has the PC, and I control it all remotely via library server. Now, don't get me wrong, library server is awesome, but it doesn't allow me to directly edit files, so I can't try easily an external app to add lyrics.
If it's not possible, then it's not possible, and I'm ok with that. I don't need to see the lyrics really -- I just thought they'd be cool to add so I can see them on my iPhone.
I'll post back if I have any bright ideas...thanks.
Micah