Application하고 상관없는 Shell에서 사용하는 기본적인 소리를 없애고 싶을때는.
wince500publicwceshellfe.bib 를 열고, "asterisk.wav"를 찾아서 다음 처럼 주석처리
해 주고, 다시 빌드하면 소리가 안납니다.

; @CESYSGEN IF WCESHELLFE_MODULES_CPLMAIN
    copyrts.txt     $(_FLATRELEASEDIR)copyrts.txt          NK SH
; Rem    asterisk.wav    $(_FLATRELEASEDIR)asterisk.wav         NK S
; Rem    close.wav       $(_FLATRELEASEDIR)close.wav            NK S
; Rem    critical.wav    $(_FLATRELEASEDIR)critical.wav         NK S
; Rem    default.wav     $(_FLATRELEASEDIR)default.wav          NK S
; Rem    empty.wav       $(_FLATRELEASEDIR)empty.wav            NK S
; Rem    exclam.wav      $(_FLATRELEASEDIR)exclam.wav           NK S
; Rem    infbeg.wav      $(_FLATRELEASEDIR)infbeg.wav           NK S
; Rem    infend.wav      $(_FLATRELEASEDIR)infend.wav           NK S
; Rem    infintr.wav     $(_FLATRELEASEDIR)infintr.wav          NK S
; Rem    menupop.wav     $(_FLATRELEASEDIR)menupop.wav          NK S
; Rem    menusel.wav     $(_FLATRELEASEDIR)menusel.wav          NK S
; Rem    openprog.wav    $(_FLATRELEASEDIR)openprog.wav         NK S
; Rem    question.wav    $(_FLATRELEASEDIR)question.wav         NK S
; Rem    startup.wav     $(_FLATRELEASEDIR)startup.wav          NK S
; Rem    windmax.wav     $(_FLATRELEASEDIR)windmax.wav          NK S
; Rem    windmin.wav     $(_FLATRELEASEDIR)windmin.wav          NK S
; Rem    recstart.wav    $(_FLATRELEASEDIR)recstart.wav         NK S
; Rem    recend.wav      $(_FLATRELEASEDIR)recend.wav           NK S
; @CESYSGEN ENDIF