Stir It Up is from the movie/album Beverly Hills Cop (Music From The Motion Picture Soundtrack). Stir It Up Glenn Frey
Interestingly, "Nasty Girl" by Vanity 6 (played during the strip club scene) was omitted from the official soundtrack release .
For the avid downloader hunting for this specific FLAC torrent, there is often a hunt for the "Holy Grail" of this soundtrack.