How can I tell if a custom burned CD is an audio or a data disc?
Put the disc in a CD-ROM drive in your computer. Start Windows Explorer and look at the contents on the CD you just inserted. If you see the file type .CDA on the CD, that indicates that the CD was burned as an audio CD. A data CD may contain any type of file, from .wma and .mp3 digital music files, .wmv digital video files, or even backups of document files.