Adds a MP3 Download button next to the subscribe button, thanks to youtubeinmp3 for their simple download service (http://youtubeinmp3.com/api/). Based off magnus's youtube2mp3 code. Just used something different as it wont open another tab.
< Feedback on Youtube MP3 Download Button
Quite late for me to say this but it is because Greasemonkey does not like the wildcard for http/https. This statement can be rewritten in two lines:
@match http://www.youtube.com/*
@match https://www.youtube.com/*
The two lines are the next ones without quotes and the - on the URL:
"@match http://www.you-tube.com/" "@match https://www.you-tube.com/"
Can't install with Greasemonkey
Installing with Greasemonkey:
Could not parse script:
Ignoring @match pattern http*://www.youtube.com/* because:
Error: @match: Could not parse pattern.