hicup or interruption while singing

[Duners]

Hoster has worked just fine on my Vista hewlett packard presario v6000
with a AMD Turion 64x2 mobile tech with 1.60ghz and ram of 958mb and c drive has 51gb free space of 86.5 possible. Until 2 months ago now when someone is singing and a customer wants me to search a song and add it to the playlist the minute I click on the song in the search window to select it there is a hicup or cut out in the song the singer at that time is singing.

Please help....any thoughts or ideas would be greatly appreciated