Every game, Microsoft Windows XP Home Edition SP3, DOSBox 0.72 and 0.73, AMD Sempron(tm) Processor 3000+

My problem is with sound. I do not know how to explain it, so I write exampe. I shoot and sound should play IMMEDIATELY, but sound plays after second. How can I fix it? I am sorry for my bad English. If you can answer me in Czech, I will be glad.