Need help adding music to LG Extravert?

So I got my new phone in the mail, an LG Extravert, and I put a microdscard into the sdcard slot of my phone, but the music wouldn't show up in the playlist. I used it on my other phone, but accidentally formatted the card when I put it into the new one while messing around, trying to figure things out...

Anyways, when I use the USB cord to plug my phone into my laptop, I click the icon and the only folder I see is called "tools" and inside is an application that installs.. where do I put the music? Do I make a folder? Please help.