Ecruz - this is off topic, but I am in the same boat...listening at night, with kids, and their monitors...when I am home that is-
Although this might not fix your interference issues with the NuForce, check out Sony's Babycall monitors. They are voice activated. That means that they don't make a sound [no static] until the child makes a noise. Once there is a noise at the sending unit, it will kick-on for as long as the noise persists, then shuts off after a couple of seconds.
http://www.sonystyle.com/is-bin/INTERSHOP.enfinity/eCS/Store/en/-/USD/SY_DisplayProductInformation-Start?CategoryName=pa_Radio_Nursery&ProductSKU=NTM900
I use two [one for each kid] in my basement listening room/HT. They also have changeable channels/frequencies so you can have two that don't interfere with each other. Since they run silent until a problem, I can enjoy the quiet. These are a MUST HAVE for any audiofile/videophile with kids.
Good Luck