You can use a Bar Code Repeater, a kind of CD player often used in language classes, to play the Ready-Set-GO! English CDs. If you have a Bar Code Repeater, look in the instruction book that came with the machine. There you might find a list of bar codes for tracks 1 to 99. Use this page (or a copy) to choose the tracks shown on the Text Poster.
I tried to scan a copy of the bar code tracks, but the quality wasn't good enough for the bar code reader to read. If you want me to mail you a copy, email me and I can send you one.