[Habetdin]

cleric1985_n, могу предложить лишь перепакованную версию... Без ассоциаций/с ассоциациями по-умолчанию
Вот скрипт NSIS, с ассоциациями по-умолчанию:

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Код:

; Script generated by the HM NIS Edit Script Wizard.

; HM NIS Edit Wizard helper defines
!define PRODUCT_NAME "DVD X Player 5.3 Pro"
!define PRODUCT_VERSION "5.3.4"
!define PRODUCT_PUBLISHER "Installer builded by Habetdin"
!define PRODUCT_WEB_SITE "http://forum.oszone.net/member.php?userid=150730"
!define PRODUCT_UNINST_KEY "Software\Microsoft\Windows\CurrentVersion\Uninstall\${PRODUCT_NAME}"
!define PRODUCT_UNINST_ROOT_KEY "HKLM"
!define Branding "—— Compiled by Habetdin"

SetCompressor /SOLID lzma

; MUI 1.67 compatible ------
!include "MUI.nsh"
!include "FileAssociation.nsh"

; MUI Settings
!define MUI_ABORTWARNING
!define MUI_ICON "ico\install.ico"
!define MUI_UNICON "ico\un.ico"

; Welcome page
!insertmacro MUI_PAGE_WELCOME
; Directory page
!insertmacro MUI_PAGE_DIRECTORY
; Instfiles page
!insertmacro MUI_PAGE_INSTFILES
; Finish page
!insertmacro MUI_PAGE_FINISH
; Uninstaller pages
!insertmacro MUI_UNPAGE_INSTFILES
; Language files
!insertmacro MUI_LANGUAGE "Russian"
; Reserve files
!insertmacro MUI_RESERVEFILE_INSTALLOPTIONS

; MUI end ------
BrandingText "${Branding}"
Name "${PRODUCT_NAME}"
OutFile "DVDXPlayerSetupPro_${PRODUCT_VERSION}.exe"
InstallDir "$PROGRAMFILES\DVD X Studios\DVD X Player 5.3 Professional"
ShowInstDetails show
ShowUnInstDetails show

Section "MainSection" SEC01
  SetOutPath "$INSTDIR"
  File /r "App\*.*"
  SetOutPath "$SYSDIR"
  SetOverwrite ifnewer
  File /r "Sys\*.*"
  CreateDirectory "$SMPROGRAMS\Мультимедиа\${PRODUCT_NAME}"
  CreateShortCut "$SMPROGRAMS\Мультимедиа\${PRODUCT_NAME}\${PRODUCT_NAME}.lnk" "$INSTDIR\DVDXPlayer.exe"
  CreateShortCut "$SMPROGRAMS\Мультимедиа\${PRODUCT_NAME}\Справка.lnk" "$INSTDIR\Help.chm"
  RegDLL "$SYSDIR\Mpeg2Data.ax"
  RegDLL "$SYSDIR\mpg2splt.ax"
  RegDLL "$SYSDIR\MSDvbNP.ax"
  RegDLL "$SYSDIR\psisrndr.ax"
  RegDLL "$SYSDIR\psisdecd.dll"
SectionEnd

Section -AdditionalIcons
  CreateShortCut "$SMPROGRAMS\Мультимедиа\${PRODUCT_NAME}\Удалить ${PRODUCT_NAME}.lnk" "$INSTDIR\uninst.exe"
SectionEnd

Section -Post
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".avi" "DVDXPlayer.Video"
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".vob" "DVDXPlayer.Video"
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".dat" "DVDXPlayer.Video"
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".mpg" "DVDXPlayer.Video"
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".mpe" "DVDXPlayer.Video"
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".mpeg" "DVDXPlayer.Video"
  ${registerExtension} "$INSTDIR\DVDXPlayer.exe" ".ac3" "DVDXPlayer.Audio"
  WriteUninstaller "$INSTDIR\uninst.exe"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "DisplayName" "$(^Name)"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "UninstallString" "$INSTDIR\uninst.exe"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "DisplayIcon" "$INSTDIR\DVDXPlayer.exe"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "DisplayVersion" "${PRODUCT_VERSION}"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "URLInfoAbout" "${PRODUCT_WEB_SITE}"
  WriteRegStr ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}" "Publisher" "${PRODUCT_PUBLISHER}"
SectionEnd


Function un.onUninstSuccess
  HideWindow
  MessageBox MB_ICONINFORMATION|MB_OK "Удаление программы $(^Name) было успешно завершено."
FunctionEnd

Function un.onInit
  MessageBox MB_ICONQUESTION|MB_YESNO|MB_DEFBUTTON2 "Вы уверены в том, что желаете удалить $(^Name) и все компоненты программы?" IDYES +2
  Abort
FunctionEnd

Section Uninstall
  ExecWait "$INSTDIR\CallFileAssoc.exe /Un"
  ${unregisterExtension} ".avi" "DVDXPlayer.Video"
  ${unregisterExtension} ".vob" "DVDXPlayer.Video"
  ${unregisterExtension} ".dat" "DVDXPlayer.Video"
  ${unregisterExtension} ".mpg" "DVDXPlayer.Video"
  ${unregisterExtension} ".mpe" "DVDXPlayer.Video"
  ${unregisterExtension} ".mpeg" "DVDXPlayer.Video"
  ${unregisterExtension} ".ac3" "DVDXPlayer.Video"
  RMDir /r "$INSTDIR"
  RMDir /r "$SMPROGRAMS\Мультимедиа\${PRODUCT_NAME}"
  RMDir "$SMPROGRAMS\Мультимедиа"
  DeleteRegKey HKCU "Software\DVDXStudios\DVDXPlayer Professional"
  DeleteRegKey /ifempty HKCU "Software\DVDXStudios"
  DeleteRegKey ${PRODUCT_UNINST_ROOT_KEY} "${PRODUCT_UNINST_KEY}"
  SetAutoClose true
SectionEnd

P.S.: для регистрации ассоциаций используется FileAssociation.nsh, найти можно тут