C :: DLL Error - Procedure Entry Point Could Not Be Located

I hope that this isn't an elementary question to you more experienced people, but I am having some trouble with my .DLL file. I haven't ever had a problem with compiling and linking it with my main project before, but it appears now some sort of problem has started. The message that appears is :

I have no qualms with posting my .DLL source, as it is not particularly long or complex. It seems the problem functions are the last two I've added ( load_sound( ) and play_sound( ) ).

Here is what I'm linking it with :

Code:

-------------- Build: Debug in game (compiler: GNU GCC Compiler)---------------
mingw32-g++.exe -shared -Wl,--output-def=binDebuglibgame.def -Wl,--out-implib=binDebuglibgame.a -Wl,--dll -L"F:FBLARandom gamegame.dll.sourcegame" objDebugconversion.o objDebugprojectile.o objDebugSDL_utility_functions.o objDebug ime.o -o binDebuglibgame.dll -lSDL -lSDL_mixer
Creating library file: binDebuglibgame.a

Output size is 49.10 KB
Process terminated with status 0 (0 minutes, 0 seconds)
0 errors, 0 warnings (0 minutes, 0 seconds) projectile.c :

Code:
#include "game.h"
#include <stdio.h>
#include <stdlib.h>

/* ******************************************************** */
/* ********* create( ) ********* */
/* ******************************************************** */
/* - Allocates one node of type projectile on the heap, */
/* and returns its' address */
/* ******************************************************** */

[Code] ....