I have an older iMac running 10.5.8. I'd like to find an app to download the sound from YouTube videos to my computer as MP3 or MP4 so's I can run them through slow-down apps. Any suggestions?

Thanks in advance and best wishes.

Steve

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"[Some flutists] place the flute between the upper lip and the nose, blowing the instrument from below. This position does not prevent good playing, but it does not look graceful."
~ Antoine Mahaut, 1759 in a tutor for playing the transverse flute ~

Try http://www.youtube-mp3.org

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http://www.toppish.com
https://www.facebook.com/toppish

Dead easy.
http://en.mediagetter.com/

If you're okay using the command line, my preferred solution is youtube-dl with the -x ("extract MP3") flag.

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Sol's Tunes (new tune 7/2018)

Thanks very much folks. Much appreciated.

Best wishes.

Steve

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"[Some flutists] place the flute between the upper lip and the nose, blowing the instrument from below. This position does not prevent good playing, but it does not look graceful."
~ Antoine Mahaut, 1759 in a tutor for playing the transverse flute ~

I use a plug-in for Firefox called "Wondershare".

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Deartháir don phaidir an port.

I use, also in Firefox, Video Download Helper in the past and was happy enough. Dpwnloaded it again a few days ago, it has a number of conversion options.

You do know Youtube has a 'speed' option? For the ones you don't want to download but still want to hear at half or quarter speed.

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My brain hurts