Sony’s PlayStation Vue streaming TV service is now available on Roku’s set-top boxes, media sticks and television sets. The Vue service enables users to stream dozens of cable channels such as CNN, Comedy Central, ESPN, Fox News and MTV over the Internet. Vue can be accessed as a Roku app in addition to apps for iPhones, iPads and Amazon’s Fire TV. Next week Vue will be offered for Android users. “Now that Vue is available nationwide and on many streaming-video devices, it’s truly a viable alternative to a traditional cable-TV service,” suggests The Wall Street Journal.