This error is usually caused by one of two things:
1. Your sound card needs updating. This software is usually available for free download on the manufacturer's website, or you can do it directly from your Device Manager.
2. You need to make sure that your computer uses Windows Media as the default player for mp3 files.
Open Windows media player, find the Options->File Types. Make sure mp3 audio has a check mark. Apply changes.
If neither of those work, re-installing the game might help.