Things You'll Need
Instructions
Purchase a SongPro device. You can find one using an online auction site like eBay, an online marketplace like Amazon or a used videogame store.
Insert an SD card into the SD card reader on your PC.
Open "My Computer" and double-click on the SD card drive to access your card.
Start "Windows Explorer" and navigate to the location on your hard drive where you store your music.
Use your mouse to drag and drop music files from your music storage location to your SD card. When finished, remove your SD card from your PC.
Slide your SD card into the SongPro unit, then insert the SongPro into the cartridge slot on your Game Boy Color.
Turn your Game Boy Color on. You'll now be able to browse through the music you put on your SD card. Use the D-Pad to select a song and press the "A" button to begin playing it.