Click "My Account" in the top right corner, then go to the tracks section, click the edit button on any of your tracks, look for the preview of your tracks cover and click on it, at that point you'll be able to access your computers image files. You then select the image you want to the cover to be and that's about all you need to do.
If you click ur profile in the top right and then go to my account you should have a list of all your tracks. Select edit on the one you want to add a picture to. Then click the masive blue and white soundation icon that says "+ add image" and choose the image from ur files.
hewwo here is this beat 4 yall enjoy!!! ;] :3