How to hook up PS3 to Logitech Z-4

[gbh]

I have these speakers
http/www.newegg.com/Product/Product.aspx?Item=N82E16836121130

I want to hook up the audio from my ps3 to them but havn't been successful. I have my PS3 hooked up to my monitor via HDMI.

Any help be cool thanks guys

 

[rexter]

Your monitor has to have audio out connection and selected to send the signal to your speakers. Read your monitor manual on how to set audio output.