Finally I’m a Asset Store publisher for my development platform of choice (Unity):

UniOSC : https://www.assetstore.unity3d.com/en/#!/content/17658

JACK4U : https://www.assetstore.unity3d.com/#!/content/19291

monoflow’s metablobs :  https://www.assetstore.unity3d.com/en/#!/content/26804

It was a hard work but working with Unity makes so much fun. If you want to alienate Unity  for music visualization these assets could be very useful for you.