Availability of codec audio

Depending on your version of Windows and the service packs (SP) installed, Windows is able to decode certain formats and audio. For formats not taken into account natively by Windows, it is possible in certain cases to install the Windows update or third person codecs.

Formats managed by Duplicate Media Finder:
Format Windows XP SP1/SP2
& server 2003
Windows XP SP3 Windows Vista
& server 2008
Windows 7 Windows 8.1 Windows 10
wav Yes Yes Yes Yes Yes Yes
mp3, wma No Yes Yes Yes Yes Yes
mp2, ac3 No No No No Yes Yes
flac No No Yes(1) Yes(1) Yes(1) Yes
m4a (aac) No No Yes(2) Yes Yes Yes
m4a (alac) No No No No No Yes

(1) With codec FLAC Media Foundation
(2) With service pack 2 and Platform Update Supplement KB2117917.