almost, it means that one of your files (.h/.cpp) is requesting a call to ID3_Tag::ID3_Tag(char const*)
Everything compiled into your application (.a, .h, .cpp, etc.) doesn't have such class/namespace ID3_Tag with the ID3_Tag(char const*) method.
Therefore you must find out which file is calling it and which library is needed for that call to work.
If ID3_Tag is a class that you created then find out which OTHER file is using that class and then.
Code:
#include "ID3_Tag.h"