Danny,
I meant the end as far as Bob and I go because until we hear back from you it's all speculation as to what you are really running for gear and how.
I think Bob and I agree on two things:
1. If you are plugging your laptop directly into a powere amp without any sort of mixer that this is wrong
2. If you are using a mixer already, as I suspect, then to add another mixer is also wrong as there should be plenty of gain.