[Q] Livestream app and running one in a background

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http://forum.xda-developers.com – I've got an HTC DNA and I am interested in live streaming a road trip coming up. I intend to mount my phone on my dash facing forwards so the camera can stream the road ahead. The problem I am facing is that if I want to switch to navigation and still stream I can't . Ustream, Livestream, and Justin.tv all stop broadcasting as soon as the app is backgrounded or I switch to another app such as navigation. Is there a way to: 1. Stop any of these apps from shutting down when switching to another app? or 2. Use another app entirely that supports what I want to do? Thanks... (HowTos)