I'd agree with Mark on that one, I find that trying to do anything complex whilst listening to music at the same time knackers my head.

I'd add 'try not to concentrate too hard' - I find if something is causing me to have trouble concentrating and my brain is losing track of it, I naturally go into panic mode and concentrate harder, making my brain even tireder, adding stress to the mix and leading to a vicious circle of symptoms.

If you can instead just be cool with the fact that you are having trouble concentrating, or that you are being a bit overloaded with stimulation, and let it all wash over you, the brain seems to cope much better - surprisingly I find I tend to actually take in more with this attitude as well.