clean and re-seal windows

I want to repaint my bedroom and window trim, but I want to clean up the window seal and then sand it all down first. the house was built in 1990 and the windows are original - double panes in a wood frame. The previous owners used some sort of sticky black stuff (my guess is 3M super weatherstrip adhesive meant for CARS). I want to know (A) what I can clean this up with and (B) what to re-seal with (silicone?) after it's painted. I'm having a hard time online because everything is for PVC window frames or very traditional wood Windows with glazing. TIA!

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