So much for playing Mozart to your unborn child. Instead, some companies are trying to introduce babies to music with MP3 players designed for the crib. The trend has resulted in partnerships such as one between Creative Technology, maker of the "Mr. Potato Head" (and countless other toys). TG Daily says the two companies have joined forces to market such products as the "Made for Me" line of MP3 players, which come preloaded with songs for babies that can be replaced as they get older. We, however, will draw the line at infant headsets.," and Playskool, maker of "