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It's not about the money. It's about your credibility. You cannot tell me that I can't convert video to audio using RealPlayer. Just like you cannot insist that 3+1=0. If you do you've lost credibility in the eyes of anyone with a properly functioning brain.
News Flash: There is something called "truth" and it's far bigger than you and me and everyone else on this planet.
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I think the problem is
terminology. I can
convert water into ice. I can
extract water from a grape. But I can't
convert ice into a grape. Likewise you can not convert video into audio using Realplayer. You can convert a video file into another type of video file, say wav to MP4.
I don't blame you for using the words you have read on-line.
UPDATE - I just googled
https://customer.real.com/hc/en-us/articles/204295208-Convert-music-videos-to-audio-tracks and saw what you are seeing. If you have time try this experiment for me. Take a silent video and convert it into audio. If it produces an audio file then I will be convinced and offer here an apology to you for the initial paragraphs. thanx