hello to every1
greetings from croatia

i have a problem with recording audio on concerts.
the thing is i connected my jvc everio 575 to master audio of the club where the concert was.
cabel goes in the external mic jack (3,5mm)

when i experimented at home on my pc it worked great, but only when i lowered volume significantly. anything louder produced significate noise.

i tried to connect it on a psy trance party 4 days ago and the sound was terrible. i could hear the music but the noise was louder.
two days ago i tryed again on a concert, had a talk with the sound man, we tryed to lower volume as much as possible, and the results were better but far from perfect.

does any1 know what to do? any advice how to connect properly?
can i repair this via software?

tnx in advance and sorry if topic was allreasy posted.
also apologies for my lousy english