Stream audio with Airport Extreme, is it possible to use a usb to audio input jack to stream music?

I know that this is not possible but there must be alternative other than getting airport express instead. Can I use a usb to audio jack adapter to stream music? If so how can I control it through the network? If not then what?

Hope you can help.

QA AirPort Extreme Base Station

QA AirPort Extreme Base Station

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