You can change your preferences so that you are only seeing the Mac or PC files in your 'Available Downloads.' To do this, log into your account on our website. Click on 'My Account' in the upper right. On the left, click on 'Your Preferences.' On the new page, you will see a dropdown menu. In this menu, choose Mac only or PC only. Then click 'Submit' further down on the webpage. Now when you go to 'Available Downloads,' you will only see the downloads for the platform you have chosen.