Default Phone call and listen to music?

Is there a way to talk on my BT headset and continue to listen to music (via cable into stereo) at the same time? I have an 2008 Highlander and listen to music via a cable/3.5MM jack. However, when a phone call comes in, the music is muted and call routed to my headset. Now I have no music to sooth my soul while my sister goes on a 10 minute complaining rant (JK).