Do I need to credit the creators of the sound effects or SFX Cellar? August 24, 2020 05:56 Updated It's up to you! Any reference to our platform is more than welcome. But it's not mandatory. Related articles Do I receive exclusive use rights for the sound effects I download? How long is my SFX Cellar license valid and what does it include? What's the difference between the Premium and mp3 plan? Are the sound effects royalty-free? Can I use commercially the sound effects I download during the trial period? Comments 0 comments Article is closed for comments.