: Use WAV if you plan to edit the sound or analyze the frequency, and MP3 for ringtones or casual listening.
: If you want these for notifications, the Bats Sounds & Ringtones app on Google Play has over 30 pre-set tones. If you'd like, I can help you: skachat zvuk letuchikh myshei
Find a (10+ minutes) for a video or background. : Use WAV if you plan to edit