MSI 945 Neo5 Series User Manual page 75

Important
You have to plug audio device into the jacks on the rear and front panel first
before enable the multi-stream function.
W hen you are playing the first audio source (for example: use W indows Media
Player to play DVD/VCD), the output will be played from the rear panel, which is the
default setting.
Then you must to select the Realtek HD Audio output from the scroll list first, and
use a different program to play the second audio source (for example: use W inamp
to play MP3 files). You will find that the second audio source (MP3 music) will come
out from the Line-Out audio jack of Front Panel.
Realtek ALC888 Audio
A-9