Noob with not sound at all (bad routing of course i guess)

[tangucho]

I have the problem of not hearing anything at all.

This is my current setup.
1)Macbook Pro 2.33Ghz 3GB RAM 500GB 7200rpm HDD.
2)MOTU Ultralite MK 3 connected to MBP via Firewire
3) Samson StudioDock 4i active monitors connected to MBP via USB 2.0
4) Kaoss Pad 3 connected to Ultralite MK3 via standard stereo cable ( I have tried each and every input jack)

This is why I get.

-I cant hear nothing at all from the studio monitors despite MK3 receive signal from the Kaoss Pad 3 (I can see that even on the osciloscope)
-When I connect headphones to Kaoss Pad 3 i can hear it normally but when I connect the headphones to Ultralite MK3 i cant hear nothing at all.

When I run the MOTU setup i cannot see the StudioDoc 4i monitors as an output device.

What is what i need??

I need the StudioDock to be my main stereo output. Should I need to plug cables from the ultralite to the studiodock input RCAs??
Is there a way to setup the software to use the USB connection to setup the monitors to be the ultralite main output?

thank you very much in advance