Folder full of useless music....

I did this dumb thing. Okay it's like this. I started sort of creating a playlist of my favorite songs. But what I did is I just created a folder in the Chrome bookmark toolbar. Then if I found a video on youtube I liked I'd click on it and drag the URL into that folder. So it started bookmarking whichever songs. Gradually creating a play list. So now I have this long list of songs in this folder. They won't play one after another (at least I don't know how to do that, if it's even possible). But what I want to do is download all the songs and create a normal playlist on my computer. Cuz sometimes the net runs slow and it won't play it on youtube. But how can I do that?

The only way I can think of is to click on one, then paste it into one of those convert to mp3 sites. Then download it. That's a long long process. I was hoping that maybe there was a faster way to just get all the songs that I have bookmarked??? Any suggestions....

Also anyone ever gone to Japan? Is it worth seeing?