21. A computer program product for adjustment of temporal acoustical characteristics of words in an item structure, wherein the computer program product does not comprise a transitory signal, the computer program product comprising: a computer useable medium having a computer useable program code embodied therewith, the computer useable program code comprising: computer useable program code configured to perform operations, the operations comprising: receiving the item structure, the item structure comprising items, wherein each item represents at least one word; determining a number of speeds of audio playback for the item structure; generating, in response to the number of speeds of audio playback for the item structure, a non-redundant item structure having keyword items based upon the item structure for the number of speeds of audio playback by extracting, from each item, at least one keyword or phoneme to create keyword items; determining alternative representations for each keyword item to create a condensed item structure of abbreviated items, the alternative representations each comprising at least one stressed syllable to represent words within each of the keyword items; and storing the condensed item structure; wherein abbreviated items for a faster speed are shorter than abbreviated items for a slower speed by extracting less keywords or phonemes from the first set for the faster speed, generating a shorter alternative representation for the faster speed, or both.
21. A computer program product for adjustment of temporal acoustical characteristics of words in an item structure, wherein the computer program product does not comprise a transitory signal, the computer program product comprising: a computer useable medium having a computer useable program code embodied therewith, the computer useable program code comprising: computer useable program code configured to perform operations, the operations comprising: receiving the item structure, the item structure comprising items, wherein each item represents at least one word; determining a number of speeds of audio playback for the item structure; generating, in response to the number of speeds of audio playback for the item structure, a non-redundant item structure having keyword items based upon the item structure for the number of speeds of audio playback by extracting, from each item, at least one keyword or phoneme to create keyword items; determining alternative representations for each keyword item to create a condensed item structure of abbreviated items, the alternative representations each comprising at least one stressed syllable to represent words within each of the keyword items; and storing the condensed item structure; wherein abbreviated items for a faster speed are shorter than abbreviated items for a slower speed by extracting less keywords or phonemes from the first set for the faster speed, generating a shorter alternative representation for the faster speed, or both. 24. The computer program product of claim 21 , wherein extracting, from each item, at least one keyword comprises accessing a text mining knowledge base to determine the keywords based upon word comprehension and grammar.