Los Angeles-based Xingtone has signed a partnership with Zango, a Bellevue-Washington based service that allows web publishers to publish games, video, audio, and software from its network. xingtone will provide free trial access to its content to users of Zango. Xingtone is a publisher of mobile content, including music, images, and videos, for wireless phones. Xingtone said that the free trial will help it drive traffic to its paid services. Zango is operated by 180solutions.