Your configuration is invalid. This is most likely due to a changed device path.

[saratoga]

Is Rockbox not capable of connecting to my computer via usb or something?

Yes, thats exactly what I am saying. 

Then how am I supposed to add music and videos to my player?

See above.

[pcq]

See above.

Man, I have no idea what you're talking about. Why must you be so vague? Are you trying to be mysterious or something?

[Chronon]

Use the original firmware for USB.

You can't change it back from within Rockbox. Fortunately there's dual boot, since you use the original firmware for USB transfers anyway, so it would make sense that it's in the original firmware that you need to change the setting, just like you did the first time.

I was a bit puzzled by this:

I didn't find the manual much help, especially since it seems to only be referring to the apple ipod, but thanks for leading me in the right direction.

Is there phrasing in the manual for your player that needs to be changed?