main.cpp

#include <QtGui/QApplication>
#include "database.h"
#include "mainwindow.h"

#include "tag.h"
#include "fileref.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    qsrand(QDateTime::currentDateTime().toTime_t());

    //Tray handling and application life-cycle settings
    if (!QSystemTrayIcon::isSystemTrayAvailable()) {
        QMessageBox::critical(0, QObject::tr("Systray"),
                              QObject::tr("Could not detect any system tray on this OS."));
        return 1;
    }

    //QDir *dir = new QDir("C:/Users/jocull/Desktop");
    //QString path = dir->absoluteFilePath("03.flac");

    //***This line seems to cause problems
    TagLib::FileRef fr("C:/Users/jocull/Desktop/03.flac");

    if (!initDB())
        return 1;

    MainWindow w;
    w.show();

    return a.exec();
}

project.pro

#-------------------------------------------------
#
# Project created by QtCreator 2010-09-30T23:19:47
#
#-------------------------------------------------

QT       += core gui sql

TARGET = QtTrayTime
TEMPLATE = app

CONFIG(release, debug|release) {
    DESTDIR = release
} else {
    DESTDIR = debug
}

INCLUDEPATH += taglib-w32-qt/ \
           taglib-w32-qt/ape \
           taglib-w32-qt/asf \
           taglib-w32-qt/flac \
           taglib-w32-qt/mp4 \
           taglib-w32-qt/mpc \
           taglib-w32-qt/mpeg \
           taglib-w32-qt/mpeg/id3v1 \
           taglib-w32-qt/mpeg/id3v2 \
           taglib-w32-qt/mpeg/id3v2/frames \
           taglib-w32-qt/ogg \
           taglib-w32-qt/ogg/flac \
           taglib-w32-qt/ogg/speex \
           taglib-w32-qt/ogg/vorbis \
           taglib-w32-qt/riff \
           taglib-w32-qt/riff/aiff \
           taglib-w32-qt/riff/wav \
           taglib-w32-qt/toolkit \
           taglib-w32-qt/trueaudio \
           taglib-w32-qt/wavpack

DEPENDPATH += taglib-w32-qt/ \
           taglib-w32-qt/ape \
           taglib-w32-qt/asf \
           taglib-w32-qt/flac \
           taglib-w32-qt/mp4 \
           taglib-w32-qt/mpc \
           taglib-w32-qt/mpeg \
           taglib-w32-qt/mpeg/id3v1 \
           taglib-w32-qt/mpeg/id3v2 \
           taglib-w32-qt/mpeg/id3v2/frames \
           taglib-w32-qt/ogg \
           taglib-w32-qt/ogg/flac \
           taglib-w32-qt/ogg/speex \
           taglib-w32-qt/ogg/vorbis \
           taglib-w32-qt/riff \
           taglib-w32-qt/riff/aiff \
           taglib-w32-qt/riff/wav \
           taglib-w32-qt/toolkit \
           taglib-w32-qt/trueaudio \
           taglib-w32-qt/wavpack

win32 {
    CONFIG(debug, debug|release) {
        win32-g++:LIBS += ../$${TARGET}/taglib-w32-qt/taglib-debug/libTagLib1.a
    } else {
        win32-g++:LIBS += ../$${TARGET}/taglib-w32-qt/taglib-release/libTagLib1.a
    }
}

SOURCES += main.cpp \
        mainwindow.cpp \
    secondwindow.cpp \
    mythread.cpp \
    pleasewait.cpp \
    transcodethread.cpp \

FORMS    += mainwindow.ui \
    secondwindow.ui \
    pleasewait.ui

RESOURCES += resources.qrc \

HEADERS += \
    transcodethread.h \
    secondwindow.h \
    pleasewait.h \
    mythread.h \
    mainwindow.h \
    database.h

QtTrayTime - output

Starting C:\Users\jocull\Documents\My Dropbox\Code\QT\QtTrayTime-build-desktop\debug\QtTrayTime.exe...
C:\Users\jocull\Documents\My Dropbox\Code\QT\QtTrayTime-build-desktop\debug\QtTrayTime.exe exited with code -1073741515

Side note, I just copied all of the source over after my TagLib build. *.cpp's and all...