UltraMixer 2.4.1 Messes up while playing

I start to play and mix music, after im about on track 3, its like i turned the tempo all the way down, the fast paced song turns into a slow song, but yet when i go to look at all the controls, theyre all default. whats wrong???

Did you actually left click or right click on the Play button. The right click does a effect like this.