As I understand LET IT PLAY allows you for example, to upload a video(share link) from YouTube in your personal cabinet and then the system will cut out the audio track itself, right? Thats free of charge?
Yes, you are right.
It's free. Everyone who has their own channel on YouTube can easily move on to LetItPlay.
is there any limit time to your system cut the audio?
Like if i have a video that over 30 minutes to 1 hour video