got it: it is totally your mixer. Let me guess, you are recording into the mixer, and have either the main outs or the control room outs connected to the AP2496 ins, and the AP2496 outs are coming back into say channel 5/6 or 3/4....there is your problem: anything coming into the mixer channels goes out the mains and control room outs so you are re-recording everything you have already got in your 'puter.
Two solutions:
1) record out of the FX send (connect the FX send to the AP2496 ins), and keep your return signal going where it is, then you control your record level with the FX send level on the channel you are using. Downside to this: you only get to record mono/one input to the AP2496. But this sends a discrete signal out the FX send, just make sure the channel that you have the outs from teh AP2496 have the FX send off (or you get the loop again)
2) keep recording out of the main outs, and return the outs from your soundcard to teh 2T Return inputs. On th phonic mixer, in the main section (bottom right corner), make sure the 2T to control room button is depressed, and make sure the 2T to main button is NOT PRESSED, or it goes back out the mains. Now, you are only going to hear what is coming into the 2T Return inputs, which means you can't monitor your board inputs UNLESS we now go to the computer and open up the Delta Control Panel .... under "patchbay router", under the H/W OUt 1/2 column on the left, select "monitor Mixer", leave everything else alone. In the Monitor Mixer section, UNMUTE Wavout 1/2 (this is any signal generated by software, ie what you have already recorded), UNMUTE H/W In 1/2 (this now also routes your input signals back out the OUTS, so you hear what is coming to the soundcard from your mixer with no latency). Make sure the Main is also unmuted. For all these unmuted things, make sure the faders are at UNITY gain (0).
Now you have it. WIth option two, you get stereo recording (just pan the inputs left and right) out of your mains. You can monitor from the board by unpressing the 2T-control room button, but this will cut out your return signals, but this is good to set up your record levels. Now, to monitor what you are playing and hear what you have recorded at the same time you press that 2T to control room button (again, do not press the 2T to main button), this will now cut any signals in the board except for the 2T inputs, and that is why we reset the Delta Control panel to feed the input signals back out the outputs so you can hear your inputs along with what you have recorded. DONE.
