I don't use N's metronome, so i can't offer much help. I have seen quite a few questions about how to use it on the N Track forum, tho'. That tells me quite a few others have had problems figuring it out as well.
I just tested it here at work on my work PC (SoundBlaster 128 card). It only worked when i selected PC Speaker.
I believe the metronome is a midi sound, so unless you have another sound card in your computer that will play midi, (the 1010 doesn't) you cant make the metronome work.
If you have an external midi device you could route the metronome to the 1010 midi out and use your synth/drum machine/whatever to play the metronome click...
Otherwise...I've never used n-track...but does it support any simple kind of vst instrument that you could route the click to?