No copyright strikes or attribution requirements for your videos. 4. Freesound.org
Websites like and Freesound.org offer massive databases of user-submitted and royalty-free audio. Search for "Facebook notification" or "social media pop" to find high-bitrate MP3 and WAV files.
This guide covers everything you need to know, including the , an easy comparison of the top platforms, and essential legal and safety tips to consider before you click the download button.