If you need to burn to CD (Burn MP3 or WMA) use Windows Media Player

You can download windows media player 10 (I think) at http://www.microsoft.com (Clickly) and click "burn files to cd" prepare a playlist and it'll do the work and change the files into the correct format.

OR check if your truck's CD player can play MP3 CDs becuase if it can you can put lots of music onto one CD and listen to them

Seith
http://www.google.com for more help with burning CDs