Yup coming in one of the upcoming updates;
New media player support -- A new app will allow you to play media files from an attached USB device or from a home media server that supports DLNA. The preview version of the update will only work with USB devices, but DLNA support is coming soon. Once this update is applied, the Xbox One will support more media formats than Xbox 360, Microsoft says. You can see a full list of supported file formats below.
http://www.gamespot.com/articles/xbox-o ... 0-6421670/Supported file formats;
Xbox One compatible file types:
3gp audio
3gp video
3gp2
aac
adts
animated gif
asf
avi divx
avi dv
avi uncompressed
avi xvid
bmp
jpg
gif
h264 avchd
mjpeg
mkv
mov
mp3
mpeg 1 ps
mpeg 2
mpeg 2 hd
mpeg 2 ts
mpeg 4 h264 aac
mpeg 4 sp
png
tiff
wav
wma
wma lossless
wma pro
wma voice
wmv
wmv hd