Hulu has blocked access to its content on BlackBerry maker Research In Motion’s PlayBook tablet.

A key selling point for Hulu Plus — Hulu’s new $7.99-per-month subscription service — is access on mobile devices, like Apple’s iPad and iPhone, through software applications.

The PlayBook is forgoing such applications in favor of a mobile browser that roams the open Internet.

Hulu operates the popular online video site owned by several major media companies, including News Corp., which also owns The Post.