I can tell you that, based on the last figures we've obtained, legal downloading has increased somewhat in a year. Before that, 90% of the content on an MP3 player consisted of unauthorized copies. For 2008-2009, we see that unauthorized reproductions represented 85%. So there has been a slight improvement.
That said, I don't see how Bill C-32 could improve the figures on music copies. Even if there are no further opportunities for illegal downloading, people will nevertheless copy music and pay nothing if the copying is done on a digital audio recorder.