here ya go dude this should help
1. Plug a guitar cable into your guitar.
2. Plug a suitable cable into your microphone.
3. Plug the mic and guitar into separate channels on the mixer. You could use a separate preamp for the guitar and the microphone if you like.
4. The keyboard has both a MIDI OUT and IN, this is so we can send MIDI OUT to the computer for recording, and then receives the MIDI back IN from the sequencer so the synth plays the sounds (eg. drums and instrument backing).
5. The Audiophile's MIDI interface provides the MIDI IN and OUT sockets. Remember that the OUT from the keyboard goes to the IN on the interface and vice versa.
6. We want to be able to hear the synth, so we plug the audio output into the mixer.
7. This is the bit people usually have trouble with. We want to be able to record the mic and guitar onto the computer. If we used the mixers master outputs then while we are recording the guitar we would record the backing from the synth at the same time onto the same track. We don't want to do this, we want to record everything onto different tracks, and we don't want to record the synth until we're completely sure of the MIDI arrangement in the software (you still with me?). So, we need to SEND the guitar and the mic to the soundcard on it's own. How do we do this? We use SENDS. All mixers have an auxiliary send or two, sometimes called "FX Sends" as that's what they are normally used for - sending out to effects. However, this time we are going to use them like an output, and send the guitar/mic channel out of the send and to the soundcard. So, turn up the send knob on the guitar and mic channels, and make sure the sends on the other channels are at zero. Now we'll be able to hear the synth, but it won't get recorded with the guitar. Super, got that? Good.
8. The output from the aux send, ideally two for stereo, is plugged into the Line Input on the Audiophile (soundcard).
9. Now, we want to be able to hear the recorded guitar at the same time as the output of the hardware synth, so the Line Output of the Audiophile needs to be plugged into the mixer.
10. Make sure the aux send on the channels for the soundcards output are at zero or you might get feedback through the computer.
11. The monitor output of the mixer carries the recorded tracks from the computer and the output of the synth and should be plugged into your speakers.
12. All the sound comes out of your powered speakers, or amp and speaker arrangement.
A good note to make at this point is that although you're using a mixer, you're not actually using it to mix anything. All you've got is a stereo output from the synth, possibly carrying multiple tracks of different instruments and the stereo output from the computer, which could carry a couple of guitars, vocals and harmony. So, all the mixing needs to be done on the computer, in Cubase or whatever you're using.