Very frustrated with airport express need help!

I am wondering if you can use airport express for the airtunes only and not as your wireless reuter in my house. I have a wireless set-up and it works great and I want to use the airport ONLY for streaming music to the stereo. All attempts have been un successful. any advice would be awesome, thanks!

I have a wireless set-up

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Welcome to the Forum.
You are a bit miserly with info - what is supplying current wireless network? Are you trying to extend that Network with the A Express? The Mac that has the music is it a Laptop or Desktop? What OS are u using? Come-on Give!!