Microsoft forecast on Wednesday that sales of its Zune music player will exceed one million units by the end of June 2007 despite a tepid start for the device. Earlier this week, a report from market research firm NPD Group showed that Zune’s share of the U.S. digital music player market fell to 2 percent and fifth place in the week ended November 25, the second week of sales since its release. Zune was second with a 9 percent market share in the first week after launch. Microsoft, which had never announced a forecast for Zune sales, said it is now on a path to sell more than one million units by June 30, the end of its current fiscal year.