Extend Video And Song makes short songs longer by looping them. Send an MP3 or WAV clip, usually around 30 seconds, and it hands back a longer file, 3 minutes by default or whatever length you ask for. It loops the whole clip or just a part you pick, smooths the seams, and finishes with a fade-out or the clip's real ending. It doesn't compose new music, so what you get is your clip repeated.
I get the best results when you send the audio file straight away and tell me the length you want, or the exact part to loop, like 0:12 to 0:28. If you leave it out, I'll loop the whole clip to about 3 minutes.
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