GTA III Modding

[Uranium Bullets]

Hi this is my first real big mod I am making and what I am doing is that I am taking almost all the audio files of some random object noises such as beeper, bridge noise, car horns, etc. But mostly I am going to be editing the sounds of the peds and replacing their audio with mine and my friends. But in my trials of trying to mod them i notice that when i replace an audio file with on of my own I have to make my audio file the same length as the original, but I have come across many problems where as for example I tried to replace the noise of the pay phone's ringer. When I did it was constantly playing over it self and starting randomly again as it was already ringing and overlapping and in an entirely different pitch and tone than it originally was. So any helped would be appreciated with this mod.

Thanks