If your Wireless and Wired networks form part of the same network (eg. a wireless router with wired connections, like this, very standard setup: http://www.netgear.com/Products/RoutersandGateways/GWirelessRouters/WGR614.aspx), then yes, your Wired computer should certainly be able to access this app.
i only have a wired router, so i guess i can't use it. i suppose i should just get a new router - i've been lazy.