Essential Sound Adobe Stock keeps playing in timeline after browsing

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Hi all, 

I was browsing music tracks in Essential Sound Adobe Stock, removed timeline synch, and went back to Editing window, but for some reason the last track I listened to in Essential Sound Adobe Stock continues playing in my timeline (I never inserted it in my timeline to begin with).

I pulled up audio clip mixer to see if it's playing from a certain track, but no audio shows up. I see levels moving next to my timeline, but cannot seem to find where this audio is coming from or stop it.

I'm on Mac 10.13.6 Premiere Pro 14.3.2 (Build 42). Please help. I cannot hear my audio that IS in the timeline. 

Thanks!

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Update: I closed my project, Quite Premiere, and then restarted, and things seemed to be back in order. But if anyone knows how to solve without doing this, I'm all ears! Thanks.