Abstract: A data carrier carries at least one identifier capable of being read by an electronic aid and is used by associating content in the form of a digital audio recording with an identifier coded on a data carrier to be read out loud by an aid. Such content is based on the words entered on the pages of a printed book. Such data carriers may be generated directly by the use of circuitry for recording contained in said electronic aid or generated indirectly by recording said content and storing the resultant digital files in memory on a computer, and thereafter uploading said files into memory of a server that may be accessed by the intended user of an electronic aid through a network by downloading said files into a handheld electronic aid for use with correlated data carriers on the pages of such book.