Sound volume problem(unexpected app & sys auto-sync)

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http://forums.fedoraforum.org – Hi, I'm using Fedora 12 with gnome-shell on ThinkPad T400. I got a problem with the sound volume. It seems that sound volume changes in specific applications also changes the system sound volume. For example, whenever I turn down the sound volume in Mplayer, the system sound volume(turned up or down through the system tray) also turns down. Another thing that annoys me is that mplayer defaults the sound volume to biggest whenever it starts to play a new file. And the strange thing is that on my old thinkpad I don't have such problems using Fedora 12, which is upgraded from Fedora 11. mplayer version: SVN-r29800-4.4.2 kernel version: #1 SMP Any idea how to fix the problem? Thanks! Tony (HowTos)