Crowdsourced Live Mobile Streaming applications, such as Meerkat and Periscope, have seen an explosive growth in their popularity in the past few years. Whereas these applications provide great opportunities for crowdsourcers to directly share their experiences around live events, the unedited nature of these user-generated video streams makes them less suited for enriching news broadcasts or event reports. For such cases, the ability to select and edit streams as they come in, or to communicate with reporters in the field, are primary requirements for any editorial office or newsroom. This paper reports on the design of, and experimentation with, a crowdsourced live mobile streaming system and application for: requesting, receiving, filtering, directing, editing, and broadcasting live video streams from both consumers and professionals. This enables new forms of crowdsourced news gathering. The paper incorporates results from a number of technology validation tests and demonstrations, performed in collaboration with Dutch media partners.