NEW YORK (Billboard) - Paul McCartney and Microsoft have paired for a month-long online promotion in conjunction with "Wingspan," McCartney's recently released Wings retrospective. WindowsMedia.com, MSN Music and www.PaulMcCartney.com will offer free audio and video clips of works by McCartney and Wings, including previously unreleased material, interviews and a newly edited video for "Maybe I'm Amazed." The promotion runs through July 18.