Different Voice for Melody in Theory Course Examples?

New user/student. Maybe the audio examples could be updated so that melodies are in a different voice(instrument) that the harmony (chords). In several examples, especially on strong beats, using the same piano sound makes it a little difficult to hear the melody distinctly. Little nit pick–the material and the way it is presented are excellent. Much better that my college music theory one course and instructor–haha.