Behringer XR18: Playing music from the iPad and using X-Air App simultaneously - YouTube
Behringer | Product | XR18
XR18 iPhone app | TalkBass.com
X AIR Quickstart Guide | Sweetwater
Behringer X Air XR12 12-Input Digital Mixer XR12 Greentoe Pro Audio
Behringer X AIR Community - Update: X AIR App V1.4.2 for iOS is now available as a free download from the Apple iTunes Store! This update addresses: - Fix for sticky mutes