How do I reactivate Honda Accord 2005 LX Radio?

I have an LX and I believe this model doesn't even have radio codes. My problem is that I recently installed a remote starter on my car, and ever since, I cannot switch to CD/AUX from FM when using the remote starter. The radio works fine so it has nothing to do with codes. I can however switch to CD/AUX when I turn the car on with the key, so It must have to do with the chip that is inside the key properly activating/starting the radio when the car first starts. Whats weird is that even after using the remote starter, putting in the key, and driving.. I cannot switch to CD/AUX. So, is there a way to somehow reactivate that feature? without resetting the whole radio? I imagine that I'd have to do this every time I use the remote starter so it shouldn't be too drastic.