diff --git a/po/th.po b/po/th.po
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+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+#
+# Translators:
+# Iho Somnam <ihosomnam4741@gmail.com>, 2017
+msgid ""
+msgstr ""
+"Project-Id-Version: Spek\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2014-03-29 13:05-0700\n"
+"PO-Revision-Date: 2017-10-16 05:09+0000\n"
+"Last-Translator: Iho Somnam <ihosomnam4741@gmail.com>\n"
+"Language-Team: Thai (http://www.transifex.com/spek/spek/language/th/)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: th\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: ../data/spek.desktop.in.in.h:1
+msgid "Spek"
+msgstr "Spek"
+
+#: ../data/spek.desktop.in.in.h:2
+msgid "Spectrum Analyser"
+msgstr "วิเคราะห์สเปกตรัม"
+
+#: ../data/spek.desktop.in.in.h:3
+msgid "View spectrograms of your audio files"
+msgstr "ดูสเปกโตรแกรมจากไฟล์เสียง"
+
+#: ../data/spek.desktop.in.in.h:4
+msgid "Spek Spectrum Analyser"
+msgstr "Spek สเปกตรัมอนาไลเซอร์"
+
+#: ../src/spek-pipeline.cc:197
+#, c-format
+msgid "%d kbps"
+msgstr "%dkbps"
+
+#: ../src/spek-pipeline.cc:202
+#, c-format
+msgid "%d Hz"
+msgstr "%d Hz"
+
+#: ../src/spek-pipeline.cc:209
+#, c-format
+msgid "%d bit"
+msgid_plural "%d bits"
+msgstr[0] "%d bits"
+
+#: ../src/spek-pipeline.cc:217
+#, c-format
+msgid "%d channel"
+msgid_plural "%d channels"
+msgstr[0] "%dchannels"
+
+#: ../src/spek-pipeline.cc:234
+msgid "Cannot open input file"
+msgstr "ไม่สามารถเปิดไฟล์ได้"
+
+#: ../src/spek-pipeline.cc:237
+msgid "Cannot find stream info"
+msgstr "ไม่สามารถหาข้อมูลสตรีมได้"
+
+#: ../src/spek-pipeline.cc:240
+msgid "The file contains no audio streams"
+msgstr "ไฟล์ไม่ได้มีข้อมูลเสียงบรรจุอยู่"
+
+#: ../src/spek-pipeline.cc:243
+msgid "Cannot find decoder"
+msgstr "ไม่สามารถหาตัวถอดรหัส"
+
+#: ../src/spek-pipeline.cc:246
+msgid "Unknown duration"
+msgstr "ไม่ทราบระยะเวลา"
+
+#: ../src/spek-pipeline.cc:249
+msgid "No audio channels"
+msgstr "ไม่มีร่องเสียง"
+
+#: ../src/spek-pipeline.cc:252
+msgid "Cannot open decoder"
+msgstr "ไม่สามารถเปิดตัวถอดรหัส"
+
+#: ../src/spek-pipeline.cc:255
+msgid "Unsupported sample format"
+msgstr "ไม่รองรับ Sample Format"
+
+#. TRANSLATORS: first %s is the error message, second %s is stream
+#. description.
+#: ../src/spek-pipeline.cc:267
+#, c-format
+msgid "%s: %s"
+msgstr "%s: %s"
+
+#: ../src/spek-preferences-dialog.cc:67
+msgid "Preferences"
+msgstr "การตั้งค่า"
+
+#: ../src/spek-preferences-dialog.cc:72
+msgid "(system default)"
+msgstr "(ค่าระบบดั้งเดิม)"
+
+#. TRANSLATORS: The name of a section in the Preferences dialog.
+#: ../src/spek-preferences-dialog.cc:79
+msgid "General"
+msgstr "ตั้งค่าทั่วไป"
+
+#: ../src/spek-preferences-dialog.cc:88
+msgid "Language:"
+msgstr "ภาษา:"
+
+#: ../src/spek-preferences-dialog.cc:104
+msgid "Check for &updates"
+msgstr "ตรวจสอบ &การอัพเดต"
+
+#: ../src/spek-spectrogram.cc:191
+#, c-format
+msgid "%d kHz"
+msgstr "%d kHz"
+
+#: ../src/spek-spectrogram.cc:196
+#, c-format
+msgid "%d dB"
+msgstr "%d dB"
+
+#. TRANSLATORS: keep "00" unchanged, it's used to calc the text width
+#: ../src/spek-spectrogram.cc:302
+msgid "00 kHz"
+msgstr "00 kHz"
+
+#. TRANSLATORS: keep "-00" unchanged, it's used to calc the text width
+#: ../src/spek-spectrogram.cc:333
+msgid "-00 dB"
+msgstr "-00 dB"
+
+#: ../src/spek-window.cc:75
+msgid "Spek - Acoustic Spectrum Analyser"
+msgstr "Spek - อะคูสติกสเปกตรัมอนาไลเซอร์"
+
+#: ../src/spek-window.cc:91
+msgid "&File"
+msgstr "&ไฟล์"
+
+#: ../src/spek-window.cc:97
+msgid "&Edit"
+msgstr "&แก้ไข"
+
+#: ../src/spek-window.cc:101 ../src/spek-window.cc:106
+msgid "&Help"
+msgstr "&ช่วยเหลือ"
+
+#: ../src/spek-window.cc:128
+msgid "Help"
+msgstr "ช่วยเหลือ"
+
+#: ../src/spek-window.cc:141
+msgid "A new version of Spek is available, click to download."
+msgstr "Spek มีเวอร์ชันล่าสุด, คลิกที่นี่เพื่อดาวน์โหลด"
+
+#. TRANSLATORS: window title, %s is replaced with the file name
+#: ../src/spek-window.cc:179
+#, c-format
+msgid "Spek - %s"
+msgstr "Spek - %s"
+
+#: ../src/spek-window.cc:226
+msgid "All files"
+msgstr "ไฟล์ทั้งหมด"
+
+#: ../src/spek-window.cc:228
+msgid "Audio files"
+msgstr "ไฟล์เสียง"
+
+#: ../src/spek-window.cc:242
+msgid "Open File"
+msgstr "เปิดไฟล์"
+
+#: ../src/spek-window.cc:264
+msgid "PNG images"
+msgstr "รูปภาพ PNG"
+
+#: ../src/spek-window.cc:270
+msgid "Save Spectrogram"
+msgstr "บันทึกสเปกโตรแกรม"
+
+#. Suggested name is <file_name>.png
+#: ../src/spek-window.cc:278
+msgid "Untitled"
+msgstr "ไฟล์ที่ไม่ได้ตั้งชื่อ"
+
+#. TRANSLATORS: Add your name here
+#: ../src/spek-window.cc:325
+msgid "translator-credits"
+msgstr "ไอโฮ โสมนาม"
+
+#: ../src/spek-window.cc:331
+msgid "Copyright (c) 2010-2013 Alexander Kojevnikov and contributors"
+msgstr "ลิขสิทธิ์ (c) 2010-2013 Alexander Kojevnikov และผู้มีส่วนร่วม"
+
+#: ../src/spek-window.cc:334
+msgid "Spek Website"
+msgstr "เว็บไซต์ Spek"
+
+#. TRANSLATORS: the %s is the package version.
+#: ../src/spek.cc:94
+#, c-format
+msgid "Spek version %s"
+msgstr "Spek เวอร์ชัน %s"