Sales numbers are out for March retail sales of hard-drive based music players, and Microsoft's Zune is holding steady in its No. 2 market position. According to numbers from NPD, the Zune's share of the market was 9.1 percent, a slight increase from its 8.8 percent share in February.
The numbers come about a month after Microsoft released a minor update to the Zune software aimed at fixing several issues, including one that was causing some users to hear skipping when playing back purchased songs.
Microsoft also announced Wednesday that it will launch a new print and broadcast ad campaign in May.