Well im not an expert as i dont have any of the software you do, so i had to do a little digging and the hunch i had seems to be correct:
Quote:
Audio CD. When you burn an audio CD, Windows Media Center converts digital audio files to an audio format that standard CD players can recognize and play back. Audio CDs can be played in most computers and in home and car CD players that play CD-R and/or CD-RW discs. You can burn an audio CD from either Windows Media Audio (WMA), MP3, or WAV audio file formats.
Some digital audio files may be protected and you may not be able to burn them to a CD, depending on the media usage rights that are assigned to the particular digital audio files by the content provider or owner.
The media usage rights info is as follows.
Quote:
Media usage rights
Permissions to use a protected Windows Media-based file in a particular way. For example, a content provider, such as an online music store, can grant you the right to play a song on your computer (a play right), to burn the song to an audio CD (a burn right), or to sync the song to a portable device (a sync right). The content provider dictates the terms of the rights (for example, which rights it grants to you and for how long) and the Windows Media Digital Rights Management (DRM) component enforces those rights. Also known as a license.
That looks to be the most likely cause of your issues, perhaps someone else can wade in with a solution????[/quote]