Connecting speakers and headphones to Audiophile 2496

[LaXu]

Planning to get the Audiophile 2496, but I was wondering how I should plug in my speakers (Altec Lansing ATP3 if I remember correctly..two flat-panel speakers and sub) and my wireless headphones (Vivanco something) into it.
The speakers are connected to the sub which is connected to the soundcard with a 3.5mm plug (on each end of the cable) and the headphones also have a 3.5mm plug (and RCA left/right on the transmitter end). With my SB Live! I've used an adapter but how do I plug them into the 2496 with it's left/right RCA output setup?

I need to have both connected at the same time (I use the headphones for late night music listening and also listening to click or backing tracks when recording or practising).

 

[ocnor]

I have an Audiophile and ATP-3 speakers. I have them connected to a Behringer UB 802 mixer. This allows me to record,play back ,and use speakers and headphones.

 

[LaXu]

I'd rather not add more gear..I know the UB802 is quite cheap but really don't need more stuff clogging up tables etc. I was hoping the wiring mess could be solved with adapters and/or cables.