The volume of my mp3 player sony E436F is too much

Hi rockgfr,
The first way to increase the volume is of course by the volume control on the right hand side of the player. If even at the highest limit (30) provided by this control, the volume seems low, then go to Settings --> Common Settings --> AVLS. The volume limit is probably on, so you can try putting it off and see if you can increase the volume further. Failing these methods, you can always use software like MP3Gain to raise the volume of your tracks.