I just got a sat radio and my old cd player doesnt have a aux input so I am forced to run it as FM. My problem is the audio level between CD and radio is quite different. So if I am playing a CD first and its at a loud volume then switch to FM it is much quieter.

Is this because of:
1 - Old CD player doesnt bring in FM very well
2 - FM Signal just isnt as strong

Finally would this be fixed if I could use a aux input? I have used the audio level adjustment on my Sat. Radio device , but it doesnt go high enough.

your sat radio unit should have its own output volume level to balance that out. aux in wont help and your two guesses are incorrect.

what satellite tuner are you using?

Congrats on your first post, 1 post every 2 years is pretty impressive

Kenwood KTC-H2EC Package from Crutchfield for xmas. It has a audio level adjustment but it doesnt make much difference.