Can't detach audio making an iMovie clip

Oy. I over-edited that post. I wanted to work with it as audio, and put a vid above it, first clarification. Second, "happened to them" alludes to answers I saw for people with this same problem over the past couple years in a closed thread. I couldn't reply to that one, but I wanted to share with the forum what *did* work for me. I was successful. Delete it from the timeline. Then re-add it to the timeline from your media. That just might do the trick. (NOTE ALSO: the first time I had it in the timeline, the colored indication of audio data, the "seismograph-looking graphic," was a solid blue line. If yours is a solid blue line, you might need to delete the clip and re-add it, as I did. When I re-added it, the little "seismograph-looking graphic" was there, and my "detach audio" was active. It worked!