Understanding Undefined Reference Unresolved External Symbol Errors MP3 & MP4

Understanding Undefined Reference/Unresolved External Symbol Errors 1:31
Fixing Undefined Reference/Unresolved External Symbol Errors in C++ 1:11
Compilation, Libraries and the pesky "unresolved external symbol" error 16:33
What is an undefined reference/unresolved external symbol error and how do I fix it? 2:33
C++ : What is an undefined reference/unresolved external symbol error and how do I fix it? 1:03
Fixing the "unresolved external symbol" in C++ | No Sound Tutorial 1:05