my computer plays files with sound like mp3s, cds and dvds and the like, but when i try to play something on my browser, sound wont play. i tried working on the javascript to no avail. and today i tried to create a ringtone with a ringtone making program. i tried to preview the file, but no sound played and my computer just kind froze up a bit. so i tried a different program, and the same thing happened, except that it made my pc run so slow that i had to reboot. can anyone help?