Opps I click a wrong button sorry but whatever, anyways. My best option is to download a song that is already mp3 from the internet. Like from Playlist dot com. You might have to download Itunes. That's the better way to play any music anyways. Go to apple dot com download Itunes/quicktime it's free. Then download the song from playlist dot com. Then make sure Itunes is the Default media player whatever and then try adding that one song onto the microSD card see if that works. I just find WMP to be unreliable hope it works good luck.