Apple is disputing a research claim that sales of iTunes music tracks were down 65 percent in the first half of 2006. “Research group Forrester said it was too soon to say whether its findings showed that buyers were ‘reaching their saturation level for digital music. Apple said the report is ‘simply incorrect’, but will not divulge iTunes financial figures. Forrester said Apple users may be put off since iTunes songs can only be played on iPods or via iTunes itself.”