Sonos ZP as Ethernet Switch

Morning,

I have just had my wireless router changed out by my ADSL supplier. The new router only has one ethernet port while the old one had two.

I have my ZP100 connected to the modem's single port and the NAS to the ZP. This works fine.

However my digital video player, which worked with the second port on the old router, hasn't recognised my NAS since it is has been plugged into the ZP100.

Any suggestions on what I might do to get the NAS and the digital media player talking through the ZP? I am missing my videos!

Thanks.