TalkingSoft.com Forums: Silent Install on XPCodecPack - TalkingSoft.com Forums

I would like that XPCodecPack can be installed silently, i had try:
/S /LANGUAGE="Spanish"
/S /LANGUAGE="SPANISH"
/S /LANGUAGE=Spanish
/S /LANGUAGE=SPANISH
/S /LANGUAGE='Spanish'
/S /LANGUAGE='SPANISH'
but always y have to click on Select Language Menu.
Excuse my poor English.
Thanks