How do card companies compete with video games, in-your-face TV advertising and Disney programming, and instant-update websites? This is a question for which there is no real answer.
There have been many attempts at making cards more interactive. Topps was part of a product towards the end of the 1980s which played clips with a special device. Post inserted baseball CD-ROMs into its cereal boxes one year. Upper Deck tried baseball card-sized interactive CD-ROM sets called PowerDeck. Pacific created a website which tied directly into the Pacific Online release. Card game inserts have been added to products to drive collectors to company websites, where entering codes can unlock online features, collections, points, and games; most recently Topps' Million Card Giveaway and Diamond Anniversary unlocked actual cards that could be mailed to your house. There have been all sorts of devices that play sounds. One of those is the ProTalk audio card.
It could be worse. You could have a device that does this:
It's a fun product if it works, but products like this have a hard time finding a home, torn between digital gamers and internet users who want more than a simple audio product, kids who don't have much allowance to spend on products like this, and collectors who don't connect with these "gimmicky" hybrid products.
But at only 19 cards, a master set might be a nice oddball to acquire.