iPod Airtunes with existing non apple network

I'm new to the Mac so please bear with me here...

I have an existing wireless network provided by a belkin wireless router, and connect my iBook to this network via the internal airport adaptor. I would like to be able to play music through my stereo speakers controlled by the iBook and understand that Airtunes may be able to do this.

Could anyone confirm that I can use Airtunes as a client to my existing network? I am reading about functionality such as repeater or even router and I really don't need all that - I just want the wireless speaker part.

Would be great if someone could confirm before I go out and buy Thanks.

Thanks for the reply. The router isn't close to the speakers.

To clarify, I'm not interested in extending the range. All I want to do is play music on some external speakers from my Mac without having a physical cable running from my Mac headphone socket to my speakers. I have a Belkin wireless network in place which my iBook can connect to fine.