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.
< Valutazione su Youtube MP3 Download Button
Works if... http only
basically I can get the button to show up if, I click the address bar and change the https:// to http:// then when it refreshes the page the button shows up and it works. I don't know how to fix the script though. I tried adding include https:// but that didn't work.