为什么SoundCloud API会出现以下编译器错误?

我已经创建了一个iPhone应用程序。我想将SoundCloud API集成到我的应用程序中。我已经创建了一个单独的应用程序来集成SoundCloud API。它在SoundCloud API上运行良好。

但我试图与我现有的应用程序集成,我得到以下错误。我已经把声音云API代码添加到我现有的应用程序中了。

错误:

ld: warning: directory '/Alex/project/../../iHearFmod/iphoneos3.1.3/System/Library/Frameworks' following -F not found
Undefined symbols:
  "_OBJC_CLASS_$_SCSoundCloudAPIConfiguration", referenced from:
      objc-class-ref-to-SCSoundCloudAPIConfiguration in MyProjectAppDelegate.o
  "_OBJC_CLASS_$_SCSoundCloudAPI", referenced from:
      objc-class-ref-to-SCSoundCloudAPI in MyProjectAppDelegate.o
ld: symbol(s) not found
collect2: ld returned 1 exit status