diff --git a/CMakeLists.txt b/CMakeLists.txt
index fba74bc..58616ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,8 @@ add_subdirectory(thtk EXCLUDE_FROM_ALL)
 #they assumed their project is the root project...
 target_include_directories(thtk PUBLIC thtk/)
 
-find_package(Qt5 REQUIRED COMPONENTS Widgets Multimedia)
+find_package(Qt6 REQUIRED COMPONENTS Widgets Multimedia)
+find_package(ICU COMPONENTS uc i18n REQUIRED)
 find_package(ECM 5.83.0 NO_MODULE)
 
 set(CMAKE_AUTOMOC ON)
@@ -58,7 +59,7 @@ add_dependencies(thplayer thtk)
 get_property(thtk_bindir DIRECTORY thtk/ PROPERTY BINARY_DIR)
 target_include_directories(thplayer PRIVATE ${thtk_bindir})
 
-target_link_libraries(thplayer thtk Qt5::Widgets Qt5::Multimedia)
+target_link_libraries(thplayer thtk Qt6::Widgets Qt6::Multimedia ICU::uc ICU::i18n)
 
 if(WIN32)
     set_property(TARGET thplayer PROPERTY WIN32_EXECUTABLE True)
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 02ff8cf..483f3a6 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -12,6 +12,7 @@
 #include <QMimeData>
 #include <QRegularExpression>
 #include <QFontDatabase>
+#include <QMediaDevices>
 
 #include "outputselectiondialog.hpp"
 #include "loopedpcmstreamer.hpp"
@@ -63,9 +64,9 @@ bool MainWindow::args(QCommandLineParser &p)
         printf("List of available output devices:\n");
         printf("Device ID\tDevice Name\n");
         int id = 0;
-        for (auto &di : QAudioDeviceInfo::availableDevices(QAudio::AudioOutput))
+        for (auto &di : QMediaDevices::audioOutputs())
         {
-            printf("%d        \t%s\n", id++, di.deviceName().toStdString().c_str());
+            printf("%d        \t%s\n", id++, di.description().toStdString().c_str());
         }
         return true;
     }
@@ -78,7 +79,7 @@ bool MainWindow::args(QCommandLineParser &p)
             printf("--device: Number expected.\n");
             return true;
         }
-        if (t >= QAudioDeviceInfo::availableDevices(QAudio::AudioOutput).size() || t < 0)
+        if (t >= QMediaDevices::audioOutputs().size() || t < 0)
         {
             printf("--device: device ID out of range.\n");
             return true;
@@ -241,12 +242,9 @@ void MainWindow::seek()
 QAudioFormat MainWindow::getAudioFormat(unsigned rate)
 {
     QAudioFormat audioFormat;
-    audioFormat.setCodec("audio/pcm");
     audioFormat.setChannelCount(2);
     audioFormat.setSampleRate(rate);
-    audioFormat.setSampleSize(16);
-    audioFormat.setSampleType(QAudioFormat::SignedInt);
-    audioFormat.setByteOrder(QAudioFormat::LittleEndian);
+    audioFormat.setSampleFormat(QAudioFormat::SampleFormat::Int16);
     return audioFormat;
 }
 
@@ -293,16 +291,16 @@ void MainWindow::play(int index)
     // audio playback:
     QAudioFormat desiredFormat1 = getAudioFormat(songs.songs[songIdx].rate);
 
-    QAudioDeviceInfo info1(
-        ~devi ? QAudioDeviceInfo::availableDevices(QAudio::AudioOutput)[devi]
-        : QAudioDeviceInfo::defaultOutputDevice());
+    QAudioDevice info1(
+        ~devi ? QMediaDevices::audioOutputs()[devi]
+        : QMediaDevices::defaultAudioOutput());
     if (!info1.isFormatSupported(desiredFormat1))
     {
         qWarning() << "Default format not supported, trying to use the nearest.";
         desiredFormat1 = info1.preferredFormat();
     }
     stop();
-    audioOutput = new QAudioOutput(info1, desiredFormat1, this);
+    audioOutput = new QAudioSink(info1, desiredFormat1, this);
     audioOutput->setVolume(1.0);
     fs::path srcfile = qstring_to_path(songs.thbgmFilePath);
     if (thver == 6)
diff --git a/mainwindow.hpp b/mainwindow.hpp
index c393118..fc7dd13 100644
--- a/mainwindow.hpp
+++ b/mainwindow.hpp
@@ -4,7 +4,8 @@
 #include <QMainWindow>
 #include <QDragEnterEvent>
 #include <QAudioFormat>
-#include <QAudioOutput>
+#include <QAudioDevice>
+#include <QAudioSink>
 #include <QBuffer>
 #include <QTimer>
 #include <QSlider>
@@ -56,7 +57,7 @@ class MainWindow : public QMainWindow
     SongList songs;
     song_t cursong;
     LoopedPCMStreamer *st = nullptr;
-    QAudioOutput *audioOutput = nullptr;
+    QAudioSink *audioOutput = nullptr;
     QAudioFormat getAudioFormat(unsigned rate);
     QTimer *timer;
     thDatWrapper *datw;
diff --git a/outputselectiondialog.cpp b/outputselectiondialog.cpp
index 0938b11..e6af0b5 100644
--- a/outputselectiondialog.cpp
+++ b/outputselectiondialog.cpp
@@ -1,6 +1,8 @@
 #include "outputselectiondialog.hpp"
 #include "ui_outputselectiondialog.h"
 
+#include <QAudioDevice>
+
 OutputSelectionDialog::OutputSelectionDialog(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::OutputSelectionDialog)
@@ -15,12 +17,12 @@ OutputSelectionDialog::~OutputSelectionDialog()
 
 void OutputSelectionDialog::init(int curout)
 {
-    QList<QAudioDeviceInfo> dl = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);
+    QList<QAudioDevice> dl = QMediaDevices::audioOutputs();
     if (curout < 0 || curout >= dl.size())curout = 0;
-    ui->label->setText(QString("The current audio output '%1' didn't work, please choose another one below.").arg(dl[curout].deviceName()));
+    ui->label->setText(QString("The current audio output '%1' didn't work, please choose another one below.").arg(dl[curout].description()));
     _selection = -1;
     ui->comboBox->clear();
-    for (auto di : dl)ui->comboBox->addItem(di.deviceName());
+    for (auto di : dl)ui->comboBox->addItem(di.description());
 }
 void OutputSelectionDialog::on_buttonBox_accepted()
 {
diff --git a/outputselectiondialog.hpp b/outputselectiondialog.hpp
index 80c59be..4927efa 100644
--- a/outputselectiondialog.hpp
+++ b/outputselectiondialog.hpp
@@ -2,7 +2,7 @@
 #define OUTPUTSELECTIONDIALOG_H
 
 #include <QDialog>
-#include <QAudioDeviceInfo>
+#include <QMediaDevices>
 
 namespace Ui
 {
diff --git a/songlist.cpp b/songlist.cpp
index a9736c8..dba9898 100644
--- a/songlist.cpp
+++ b/songlist.cpp
@@ -2,8 +2,10 @@
 #include <QFileInfo>
 #include <QDebug>
 #include <QByteArray>
-#include <QTextCodec>
 #include <QRegularExpression>
+#include <unicode/ustring.h>
+#include <unicode/unistr.h>
+#include <unicode/ucnv.h>
 #include <map>
 #include <fstream>
 
@@ -82,7 +84,9 @@ void SongList::LoadComment(thDatWrapper *datw)
     QByteArray *arr = new QByteArray((int)(scmt + 1), '\0');
     char *dat = arr->data();
     datw->getFile(isTrial ? "musiccmt_tr.txt" : "musiccmt.txt", dat);
-    QString s = QTextCodec::codecForName("Shift-JIS")->toUnicode(*arr);
+    icu::UnicodeString us(dat, "sjis");
+    std::string r;
+    QString s = QString::fromUtf8(us.toUTF8String(r).c_str());
     std::map<QString, std::pair<QString, QString>> map;
     QStringList sl = s.split('\n');
     for (auto &i : sl)i = i.trimmed();