My wordpress website loads two different style sheet for www and non-www.

Hello I have a wordpress site where I am trying to edit stylesheet but changes were not getting reflected on website. On further investigation I found that when I am loading style sheet with using http://muteaudio.com/wp-content/themes/ecobiz/style.css

Changes are there but when I am loading style sheet with:

http://www.muteaudio.com/wp-content/themes/ecobiz/style.css

It is still loading the old style sheet. I am not able to identify from where is this other style sheet coming dont the two url be redirected to same new file. Please help I need to fix the issue asap