Just followed the instructions on the web site,
1. Open up the OpenEars™ Sample App in Xcode. Drag your downloaded SaveThatWaveDemo.framework into the OpenEars™ sample app project file navigator.
2. Open up the Build Settings tab of your app or OpenEarsSampleApp and find the entry “Other Linker Flags” and add the linker flag “-ObjC”. Do this for debug and release builds.