No sound when deleting a file

[dmaul3300]

Normally when I delete a file, i get a pop up and it makes a sound asking me if i want to delete this. I still get the pop up BUT for some reason there is no sound. I looked in the sounds/notifications area and didnt see anything listed there.
other sounds still work - i can hear the sound when i connect to my pc using active sync - i can listen to my mp3s - can hear sounds playing games on my pc etc.

somehow i have disabled the sound when i try to delete a file. can someone please help me out. thanks.

also i was curious - on hard resets playing is there a difference between
hitting the soft reset button as well as the left and right soft keys at the same time versus going to start - settings - clear storage?