"Ding" sound while browsing Media Base

Hi, I'm using Mixvibes DVS pack MKII since december. I have a problem with "ding" sound appearing any time I click a file in Media Base. Since the U46MK2 soundcard (using the original driver 1.0.41) is able to split sounds, I haven't got any problem with it until now, because it was possible to avoid it muting the sound of laptop's soundcard. But now, wanting to record my mixes or mix without usage of turntables I face serious issues, because it ruins the whole mix.
Hope I can get some help here ...
I'm using W Vista and DVS 7.
Sorry for my English and thank you very much for any idea.
P.S. Another minor issue I'm facing is the latency between physical movement of pitch on my turntable and the DVS to "recognise" it.
Hope I can get some help here ...

I'm using W Vista and DVS 7.
Sorry for my English and thank you very much for any idea.
P.S. Another minor issue I'm facing is the latency between physical movement of pitch on my turntable and the DVS to "recognise" it.