Ausio Analyzer v2.0 Sketch Will Not Compile

Hi - Very new to Arduino and to programming. I followed the instructions from the product wiki and am getting this error when trying to compile the sketch:

Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "Arduino/Genuino Uno"

C:\Users\Boondox\AppData\Local\Temp\ccB8M9Fw.ltrans0.ltrans.o: In function `__static_initialization_and_destruction_0':

C:\Users\Boondox\Documents\Arduino\libraries\AudioAnalyzerExp/AudioAnalyzerExp.ino:5: undefined reference to `Analyzer::Analyzer(int, int, int)'

C:\Users\Boondox\AppData\Local\Temp\ccB8M9Fw.ltrans0.ltrans.o: In function `setup':

C:\Users\Boondox\Documents\Arduino\libraries\AudioAnalyzerExp/AudioAnalyzerExp.ino:13: undefined reference to `Analyzer::Init()'

C:\Users\Boondox\AppData\Local\Temp\ccB8M9Fw.ltrans0.ltrans.o: In function `loop':

C:\Users\Boondox\Documents\Arduino\libraries\AudioAnalyzerExp/AudioAnalyzerExp.ino:18: undefined reference to `Analyzer::ReadFreq(int*)'

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.