ActionScript 2.0 :: Sound Effects Not Playing On Flash Game

I've been working on a flash game, and recently added in sound effects. However, the sound effects only seem to play the first half-second of the audio file whenever I call on them to. I have been using the standard code.

ActionScript Code:
on (rollOver) {
if (_global.sound) {
_global.SFX1.start(0,1);
}}

But the sound effect only plays through a small amount of the audio. Also, the sound effects are not very stable, and will only play the butchered audio if there is some time in between clicking on several buttons. The odd thing is that I took the same code to another flash file, and the audio played through all the way with no problem, not requiring any additional time to play the sound effect again. I used the same code to load the sounds, which is

ActionScript Code:
onClipEvent (load) {
_global.Music1 = new Sound();
Music1.attachSound('Music1');
_global.Music2 = new Sound();
Music2.attachSound('Music2');
[Code] .....