hoster crash and freeze please help

[yorky]

dell studio laptop

windows 7 64bit home premium service pack 1
memory ram 4 gig
processor intel core duo 2.20 ghz
harddrive 750 gig with 234 gig free
intergrated ati mobility radeon hd 4570

need inmediate help please
my version is hoster 5.41.03


hoster crash,freeze and drop audio
when i'm playing a song and try
to do something else at the same time like open a folder,open any other software like virtual dj,or even worse if
i try to go to the internet.

thanks for the help