We recently reported on the Slacker Radio redesign, and the company is keeping the freshness going, debuting on the Xbox 360 today. You can download the Slacker app for free, and you've gotta be an Xbox Live Gold subscriber in the US or Canada for the privilege. You get the same overhauled color scheme, music guide, and Kinect voice controls. Head over to the Xbox Live Marketplace to grab the 116 MB download.
Finally, after a number of months, Xbox Live users now have access to Xfinity On Demand from Comcast, HBO Go, and MLB.tv. To get 'em, just head to the App Marketplace on your Xbox 360. All three apps require that you have access to, and pay for, the respective services. Comcast has announced that use of the Xfinity On Demand service will not count against a users data cap because the data is delivered over Comcast's private IP network, rather than the public Internet. It kind of makes sense, as Comcast is basically saying that the Xbox 360 is simply functioning as a cable box, but giving its own data preferential treatment does raise eyebrows as it pertains to Net Neutrality laws.
To use HBO Go, your cable service must be approved (sadly, the cable service we use at Gear Live HQ, Frontier, is not eligible) and you must subscribe to HBO service through your cable package.
Both Xfinity On Demand and HBO Go are available in the U.S., while MLB.tv can be accessed throughout North America.