The short answer is yes! All the sound effects available for download on freeSFX are uploaded by the owners of the sounds who have granted permission for them to be downloaded and used.
The sound effects we provide can be used in any commercial, non-commercial, broadcast multimedia/audio visual production. Certain restrictions are in place on how the sounds can be used which can be viewed in our End User Licence Agreement
Yes, it would be great to have you join our community and share your sound effects with us. As long as you are the copyright owner of the sounds you wish to upload or have the copyright owners full permission to distribute them, then you can add them. We do monitor quality to keep the library consistent so any files that are deemed low quality (mainly under than 22 KHz or 8 Bit files or files with excessive hiss) may be deleted. To upload your own sounds click here.