Hi ericszeto,
maybe this could be solved by tweaking the mount options.
For this you have to modify a file on your system.
Not knowing your linux skills it is hard to tell you how to do this.
Modify
this line in /var/www/app/libs/runeaudio.php
from:
$mountstr = "mount -t nfs -o [color=#FF8040]soft[/color],retry=0,actimeo=1,retr........
to:
$mountstr = "mount -t nfs -o [color=#FF8040]hard[/color],retry=0,actimeo=1,retr........
and reboot.
Frank