15. A tangible machine accessible storage device or storage disk comprising instructions that, when executed, cause a machine to at least: detect a watermark in a first media composition; retrieve a word from the watermark, the word being present in an audio track of the first media composition, the word to be audible during playback of the audio track; determine whether the word retrieved from the watermark matches a keyword of a second media composition; and present the second media composition when the word matches the keyword.
15. A tangible machine accessible storage device or storage disk comprising instructions that, when executed, cause a machine to at least: detect a watermark in a first media composition; retrieve a word from the watermark, the word being present in an audio track of the first media composition, the word to be audible during playback of the audio track; determine whether the word retrieved from the watermark matches a keyword of a second media composition; and present the second media composition when the word matches the keyword. 18. The tangible machine accessible storage device or storage disk as defined in claim 15 , wherein the watermark is a first watermark of a first media segment of the first media composition, and the instructions further cause the machine to: select a second media segment of the first media composition when the keyword is not present in the first watermark of the first media segment; detect a second watermark in the second media segment; and determine whether the keyword is present in the second watermark.