Windows XP includes the ability to perform different actions depending on the type of CD you insert into the drive. For example, you could set your system to always respond to CDs containing MP3 files by opening Windows Media Player.
To edit the Autoplay properties: Open 'my computer'. Right click on the drive you wish to set and select 'properties'. Choose the autoplay tab. Use the dropdown box to see the various recognized types of CD and choose appropriate actions for them.