Hello, i have fireface 400 firewire.

Sometimes, when i hit the play button in peak LE 6, i hear an horrible noise instead of the sound... and i don't know what is the cause of this.
It seems to happen more frequently when playing short sample several times in a row. I can't tell much more about it.

I have an Imac, with fireface 400 soundcard and Peak LE 6.

Please help,

Thank you.