k this is my main.c (my test one)
"// Hello World - My First App for the PSP

/*
This program was created by 2.6,CRACKED!. Remake on (12/02/06)
It is a simple "Hello World" Application.
*/

#include
#include

PSP_MODULE_INFO("Hello World in My app", 0, 1, 1);

/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
sceKernelExitGame();
return 0;
}

/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
int cbid;

cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
sceKernelRegisterExitCallback(cbid);

sceKernelSleepThreadCB();

return 0;
}

/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
int thid = 0;

thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
if(thid >= 0) {
sceKernelStartThread(thid, 0, 0);
}

return thid;
}

int main() {
pspDebugScreenInit();
SetupCallbacks();
printf("Hello World in My app");

sceKernelSleepThread();
return 0;
}"

My makefile

"TARGET = mp3
OBJS = hellopsp.o pg.o
CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)
LIBDIR =

LIBS = -lmad -lpspaudiolib -lpspaudio -lpsppower
LDFLAGS =
EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = Hello World
include $(PSPSDK)/lib/build.mak"

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