It’s official. San Mateo start-up Sling Media has indeed raised a pretty big round — to the tune of $46.6 million.

The product enables people to watch TV shows on the go, by tapping into programs they record on TiVo or other places. News officially released tomorrow.

Update: Goldman, Sachs & Co., Liberty Media Corporation and Echostar Communications led the financing round. Allen & Co. LLC, DCM — Doll Capital Management, Mobius Venture Capital, The Hearst Corporation and other undisclosed investors also participated in the financing. Here’s press release (downloads file)