In short words: An appeal is for saying "I didn't break copyright here". That's not how you resolve this.
Since it's been several years... You go here: https://www.newgrounds.com/bbs/topic/1489791
There you read the first post. Then you explain that you messed up, that you can create your own music now, maybe offer to send an Audio Moderator a sample of your work via 'Dumping Grounds'* & PM.
The moderators don't hate your guts or anything. Say you're sorry and that you'll do better now. Unless you were a total **** back then, they will forgive you.
Yatsufusa
Welcome back.
In short words: An appeal is for saying "I didn't break copyright here". That's not how you resolve this.
Since it's been several years... You go here:
https://www.newgrounds.com/bbs/topic/1489791
There you read the first post. Then you explain that you messed up, that you can create your own music now, maybe offer to send an Audio Moderator a sample of your work via 'Dumping Grounds'* & PM.
The moderators don't hate your guts or anything. Say you're sorry and that you'll do better now. Unless you were a total **** back then, they will forgive you.
* https://www.newgrounds.com/dump
(A feature that your old account will likely still have but your new one won't.)