The soundkit script is out of service a while ago, I forked the code and continued with the development of the script. I have some questions.
1 - To the soundkit script, I eat with the development, I made many changes and I changed the name, now it is PlayMusic.
Could I sell the product using your envato platform?
2 - In case I cannot sell with you, can I sell that product through my channels? I am not very clear about their license terms
I wait for answers, greetings 
No to either - the author retains the copyright.
The best thing you could do it to incorporate what you have done to ONE project for ONE client and sell that on a single basis
Ohh, thanks for your quick reply.
In other words, depending on the license I buy, can I only sell it to one person?
So there is no way I can continue to support the script? (maybe contacting the creator of the script).
Sorry to continue with the conversation, it’s just that I’m not clear about the legal terms. I hope you do not mind.
Hi! I’m interested in this scirpt. Please send me more information about changes you’ve made. I have many ideas abut this script so maybe you could make this possible. i sent you email by codecanyon. Best! Peter