Doube-click home button to bring up ipod controls in IOS4 possible?

Nope. Unless you jailbreak and use Activator.

 

If you find out, let me know. I'm thinking of returning my 3GS cos it's no longer the phone I bought.

 

yeah

theres settings activator to change whatever you want.

 

If not jailbroken, double click, swip eto the left and you have full iPod controls or whatever other app you're using as a music player, be it iTunes, Pandora, Slacker or whatever.

Just as easy and more control.

 

The OP says he finds it annoying.