Marguerite Reardon writes: "Cingular Wireless has begun offering a streaming music service as it continues to expand beyond basic voice calling. ¶ The cell phone carrier, which is owned by SBC Communications and BellSouth, is working with MobiTV to offer the service. Cingular already offers MobiTV's streaming video service over its network. The music service costs $6.99 per month, plus airtime, and offers about 40 channels of commercial-free music, Cingular said Monday. ..." Link: CNET News.com.