I checked APress site as well but can't find this book listed although it's still being sold on Amazon and elsewhere. Seems that Apress isn't supporting any of the code for the Wrox books they bought, quote "The source code downloads that accompany books published by Wrox are no longer supported on this site. We apologize for any inconvenience."
Also attempted by ISBN and got "This ISBN '1861005954' cannot be found." Can't find a way to search on Wrox by ISBN so I guess we get no support from either publisher. Shame, shame!