: While MP3 is the most common for notifications, ensure your device or software doesn't specifically require WAV or OGG formats.
: Most sites offer "Royalty-Free" sounds, but some may require "Attribution" (giving credit to the creator), especially for commercial projects. Download Alert mp3
: Setting a custom MP3 usually requires converting it to an .m4r file via iTunes or using a mobile app like GarageBand to export it as a ringtone. ZEDGE™ Ringtones & Wallpapers - App Store - Apple : While MP3 is the most common for
