diff --git a/bin/data/orig_dos.obs b/bin/data/orig_dos.obs
--- a/bin/data/orig_dos.obs
+++ b/bin/data/orig_dos.obs
@@ -8,7 +8,9 @@ name              = original_dos
 shortname         = TTDO
 version           = 0
 description       = Original Transport Tycoon Deluxe DOS edition sounds.
+description.ar_EG = النسخة الاصلية من ترانسبورت تايكون ديلوكس الصوتية نسخة الدوس
 description.bg_BG = Оригинални звуци на Transport Tycoon Deluxe за DOS.
+description.ca_ES = Sons originals de Transport Tycoon Deluxe per a DOS.
 description.cs_CZ = Původní sada zvuků Transport Tycoon Deluxe (verze pro DOS).
 description.de_DE = Original Transport Tycoon Deluxe DOS Basissounds.
 description.en_GB = Original Transport Tycoon Deluxe DOS edition sounds.
@@ -22,6 +24,7 @@ description.id_ID = Efek suara orisinil 
 description.it_IT = Suoni originali di Transport Tycoon Deluxe, edizione DOS.
 description.nb_NO = Originale lyder fra Transport Tycoon Deluxe for DOS.
 description.nl_NL = Originele geluiden van de Transport Tycoon Deluxe DOS-versie.
+description.nn_NO = Originale lydar frå Transport Tycoon Deluxe for DOS.
 description.pt_PT = Sons originais da edição DOS de Transport Tycoon Deluxe.
 description.ru_RU = Оригинальный набор звукового оформления из игры Transport Tycoon Deluxe для DOS.
 description.sl_SL = Originalni zvoki Transport Tycoon Deluxe različice DOS.