Flash Player 9 Update

This is a prerelease version of the Adobe® Flash® Player 9 Update software. It is being made available for developers and consumers to test their content to ensure existing content plays back correctly and that there are no compatibility issues.

The Flash Player beta is available in all languages; however, the beta installers are only in English and we can only accept feedback in English at this time. Flash Player beta downloads are available for the Linux platform.
Terms of Use

Your use of the Adobe Labs including the download of software, submission of comments, ideas, feature requests and techniques, and Adobe’s rights to use such submitted materials, is governed by the Adobe Labs Terms of Use and the Adobe Privacy Policy. By downloading, copying, or using Adobe software and related materials, you also agree to the Adobe Product License, including the limitations related to Prerelease Software.
Flash Player 9 Update Installers

Flash Player 9 Update beta 2 installers are available for Linux. Release versions of Flash Player 9 Update are available for Macintosh and Windows versions on Adobe.com.
English

    * DownloadDownload Installer for Linux (GZ, 2.48 MB)
http://www.adobe.com/go/fp9_update_b2_installer_linuxplugin

    * DownloadDownload Standalone Player for Linux (GZ, 2.38 MB)
http://www.adobe.com/go/fp9_update_b2_standalone_linux

Note: Flash Player 9 Update for Linux was updated on November 20, 2006.

from:
http://labs.adobe.com/downloads/flashplayer9.html

是打开网页时如果没有flash player时会自动下载的那个吗

hehe，不是，是linux下面的。需要自己装一下。