Apple has enabled Web-based samples of music available in the iTunes Store via the iTunes Preview Web site - prior to this, sample music was limited to iTunes itself. Nevertheless, it seems that the overall goal is to increase iTunes music discovery via Web search engines, all of which are now indexing the iTunes Preview Web site. Despite the fact that you can play samples in your browser, the iTunes Preview site pushes you to iTunes whenever possible. follow link
Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the TidBITS Content Network for Apple consultants.
Apple Adds Samples to iTunes Preview Site