It is what it is. You have to understand that they don't do it for pleasure, but for the submission guidelines (wich you can check them up by this link: https://www.newgrounds.com/wiki/help-information/terms-of-use/audio-guidelines) just to make sure that you aren't uploading content wich doesn't belong to you (even when it does belong to you).
Gekkotsuki
It is what it is. You have to understand that they don't do it for pleasure, but for the submission guidelines (wich you can check them up by this link: https://www.newgrounds.com/wiki/help-information/terms-of-use/audio-guidelines) just to make sure that you aren't uploading content wich doesn't belong to you (even when it does belong to you).