Audio CD appears to burn...result unreadable

I downloaded the free version of Express Burn.

While the "trial features" were operable, the program wrote audio CD's that my stereo player would handle.

Now that the "test period" has ended, the program appears to burn normally,

however the resulting disk is not recognized in other computer CD-ROM drives or CD-RW drives or my audio CD player.

Is the "free" version just a fiction, or is it supposed to write audio cd's recognized by other players?

Recap: during the "trial" the CD's were OK.

now the CD's are junk.

Thank you for any attention to this matter.