Playback Issues After Editing Track

Haven’t used Audacity in a few years, have the newest version. I saved a project (digitizing a mixtape), then I thought I edited, or removed dead space that was in between side a and side b of the mixtape. That turned my project into two separate tracks (or clips?), with the dead space I thought I removed still not removed, and now I can’t play anything (all that’s available is Skip to Start and Skip to End). I was able to remove the dead space, select all, and join the two clips into one, but I still can’t play it.

Hopefully the screenshots will provide a clue as to what I’m doing wrong.