Audio Cover Image Size
Using Jamroom
you can have any ratio you like, here's an example manipulating your jamroom image via the URL thats used
Different aspect ratios:
https://www.jamroom.net/user/image/user_image/2212/icon/crop=portrait/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/icon/crop=square/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/icon/crop=16:9/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/icon/crop=4:3/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/icon/crop=20:2/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/icon/crop=2:20/_v=1484072347
Different Sizes
https://www.jamroom.net/user/image/user_image/2212/large/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/xlarge/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/xxlarge/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/1280/_v=1484072347
https://www.jamroom.net/user/image/user_image/2212/original/_v=1484072347
I don't understand "how to fix" or "look correct" in the current context. You can manipulate until you have it like you like it, there is no 'correct'.
Great news.