How do I put music on my phone?

I have a casio briggade. I would like to listen to music. I've taken the card out and inserted it into my computer click and dragged and dropped songs but nothing appears on the phone when I open up the music file. I've even downloaded converting programs to switch my media files from wma to mp3. My phone won't read wma files it only reads mp3. So what am I supposed to do...?