This episode is not available through iTunes or Hulu due to Sophia singing "Purple Rain" without Prince's permission.
Alex Rocco, who plays Glen O'Brien, also was in an episode of Murder, She Wrote as a mobster who's followed by a private eye, played by Jerry Orbach. Jerry plays Glen O'Brien in a later episode.
Alex Rocco would go on to impersonate Bea Arthur's voice in the 2001 season 3 Family Guy episode 'Ready, Willing and Disabled"