Wal-Mart may be single-handedly blocking the major studios from selling their movies on Apple's iTunes online store, the New York Post indicated today (Friday). "We all want to be in the Apple business," an unnamed executive at a major studio told the Post, noting that Apple's pricing -- $9.99 to $12.99 -- is lower than Wal-Mart's. According to the newspaper which cited other studio executives, Wal-Mart has sent "cases and cases" of DVDs back to Disney, the only studio selling movies on the iTunes site, and has threatened to retaliate if other studios do business with Apple. "They threatened to hurt us in terms of buying less [sic] products," a source told the Post.