Today in Tech: Music streaming service Rdio launches video site by JP Mangalindan @FortuneMagazine April 3, 2013, 4:29 PM EST E-mail Tweet Facebook Google Plus Linkedin Share icons Also: A new Nexus 7 tablet coming this July? A peek at Rdio’s video companion site, aptly called Vdio. [Credit: Rdio]This morning, the music streaming startup Rdio announced Vdio, a video companion service that will let Rdio Unlimited subscribers buy, rent, and share new and old movies and TV shows. [RDIO] The first thing you’ll notice about Vdio is that it’s designed to solve the “what to watch” problem. It’s not just that we’ve got amazing content, but that the experience is now geared to get you from searching to watching faster. We’re introducing the notion of Sets — playlists for TV shows and movies — so anyone can make and share lists of their favorites, making it easier than ever to discover new stuff. Or, you can just check out what your friends are watching in the moment and jump in. Beyond that, Vdio has the beautiful design and social features that people love about Rdio, with plenty more to come. Google to sell second-gen Nexus 7 from July: sources [REUTERS] Google is aiming to ship as many as eight million of the Asustek-made tablets in the second half of the year, throwing down the gauntlet to other low-end tablets such as Amazon.com Inc’s Kindle Fire and Apple Inc’s iPad mini, the sources with knowledge of the new product said. This is the first time details about the timing and sales targets for Google’s new tablet have been unveiled, although the company has not publicly released any information. The Bitcoin bubble and the future of currency [MEDIUM] There are a couple of reasons why the bubble is sure to burst. The first is just that it’s a bubble, and any chart which looks like the one at the top of this post is bound to end in tears at some point. But there’s a deeper reason, too — which is that bitcoins are an uncomfortable combination of commodity and currency. The commodity value of bitcoins is rooted in their currency value, but the more of a commodity they become, the less useful they are as a currency. What the smartest people do on the weekend is what everyone else will do during the week in ten years [CDIXON] Business people vote with their dollars, and are mostly trying to create near-term financial returns. Engineers vote with their time, and are mostly trying to invent interesting new things. Hobbies are what the smartest people spend their time on when they aren’t constrained by near-term financial goals. Don’t miss the latest tech news. Sign up now to get Today in Tech emailed every morning.