—Comcast adds entertainment library to Thumbplay site: With Thumbplay Open, a digital content management system, now in beta, Thumbplay will offer extensive content to Comcast High Speed Internet customers and Comcast.net users can download music, ringtones, videos and games directly to their phones on m.comcast.net.. Thumbplay Open enables indie music artists to package and sell their own data to customers and allows site publishers and app developers to sell downloads from any site, app or widget. These users will also get a cut of the subscriber fee, $5-8 per subscriber.

—mywaves launching new content, partners with Sony Ericsson: mywaves has launched “Captivate,” its new service integrating ringtones, wallpaper and games with free mobile video and has expanded its distribution with Sony (NYSE: SNE) Ericsson (NSDQ: ERIC) by incorporating its mobile app on its multimedia handsets. mywaves has also teamed up with Audible (NSDQ: ADBL) Magic to develop a content filtering technology to protect ownership rights. Heavy users will be charged a $9.99 per month subscription fee, though not clear what exactly constitutes a “heavy” user.

—PointRoll and USA Today premiering expandable ad unit: The companies have launched an expandable rich media unit created specifically for the iPhone. Initially launching on the USA Today mobile site, it will feature campaigns for the Ford Flex and the new George Clooney-Brad Pitt flick from NBCU’s Focus Features, Burn After Reading. The mobile ads are expandable upon user initiation and include video click-to-play, coupon downloads, mapping technology directly linked to Google (NSDQ: GOOG) Maps and user-initiated click-to-call.

—Navteq featuring WaveMarket’s location access platform: Effective immediately, WaveMarket’s Veriplace is available on Navteq’s Network for Developers (NN4D) site. Based on WaveMarket’s Family Locator products already available on mobile phones, the platform enables users to protect their location data regardless of the technology being used to locate them, while also unlocking LBS opportunities for carriers and developers. Users can grant or revoke location permission at any time.

—Truveo launches public beta of video search site: Users can now access the Truveo Mobile Video Search beta site from realtime streaming protocol-supported phones by going to its WAP site. The site organizes millions of videos on over 300 sites whose content has been optimized for mobile devices and search results can be sorted by popularity, ranking or date.