Previous tracks are recorded on new track with new audio

[dustfilledhobo]

I am trying to make a simple recording of my Commodore 64 (3 separate tracks) and to use Reason's ReDrum as a drum machine. I have successfully slaved ReDrum to Logic with no issues (tracks show up where they should and sound great). My issue is what happens when I try to record the Commodore 64. When I record the Commodore 64 it also records the previous tracks on the new track, causing a lower-quality overall sound.

 

Initially I thought it had something to do with the internal microphone, but I turned that down in system preferences and I still got the same results. I even tried playing with headphones to fully eliminate the possibility of the microphone picking up the signal from the speakers, but the problem is still happening.

 

Earlier I was experiencing a feedback issue with my current setup, and I resolved this by disabling the software monitoring in Logic's preferences.

 

My output device and input device are set to the Tapco Link USB audio interface.

 

Below are my system specifications:

Computer: MacBook Pro

Logic version: 9.1.7

Operating System: OS X10.8.2

CPU: 2.5 GHz Intel Core i5

RAM: 4 GB 16000 MHz DDR3,

Hard Drive: stock hard drive (500GB)

Audio interface: Tapco Link USB (24-bit USB interface)

Mixer: Mackie 12 channel mixer

Reason Version: 5.0 (slaved to Logic via ReWire)

 

My Setup: I use Reason as a drum machine, where each drum in Reason's ReDrum is recorded on a separate track in logic, so I can easily adjust the volume, add effects, and do individual EQ to each drum instead of only having control over the entire beat.

 

Input Connections: Commodore 64 (used as a synth) ==> Tapco Link USB

 

Output Connections: MacBook Pro ==> Tapco Link USB (via USB cable) ==> Tapco Link USB Headphone Jack ==> Mixer channel ==> Mixer's Headphone Jack ==> Audio Receiver ==> Speakers

 

I hope I gave you enough information, and thank you in advance for any help you can offer.

 

Dusty

[dustfilledhobo]

Could this have something to do with turning off "software monitoring"? Or is it more likely that my audio interface is the cause. Thanks in advance for any help you can offer.

 

Dusty