my ftp software suddenly lost the "di di ""di do" sound to remind you that it is your turn to play

i have check my ftp > option > sound, the sound is open. and I have reinstall my ftp dozens of times. and still could not hear any sound . and when I open music file's the speaker is runing good no any problem.

And most weird is when i log in the ftp , there is the "di" sound remind me i have already login ,however in the table there is no any sound for folding raising anything.

it is big problem to me. because all my tables are pile together if there are no sound to remind me , i won;t know there is another table waiting for my action. so i could not open multi table. :f_cry:

have you met such problem before? i have met it before but that time i reinstall ftp and is done ,but now it seems not working

sorry about my english