Freesound Forums

I want to use some sounds for the clip contest,its title is;‘if you are the chosen one who is able to visit the other planet,what will you do on it?’.

Can I use CC BY 3.0?

if I can ,do I have to ask for permission?

Ps.I'm not good at english,sorry.

You only have to ask permission if you want to use it without credit.

Otherwise, you are free to use the sound (CC BY) without asking, as long as you attribute the author of the sound in some credits where you are using it.