Band on the Run a representation of film's flaws

Some would call this nitpicking, but the movie picks begins in August 1973, and in an early scene we see a girl listening to "Band on the Run" on a transistor radio. Only problem is that the song wasn't released until December of 1973. In fact, it wasn't even recorded until September 1973.

I found a lot of problems with this movie and consider it a wasted opportunity. The anachronism surrounding this song by Paul McCartney & Wings to me represents the laziness, the lack of research, and shoddy production observed throughout the movie.