I see. I dont have mplayer install. These are my apps:

Ad Block Plus
Amazon Installer
aMSN (This seems really laggy, I might remove it)
AP news installer
bounce evolution
conversations inbox widget
documents to go installer
documents to go
eyes widget
facebook installer
facebook widget
fmradio
foreca installer
forecaweather
hermes
load applet
mirror
personal dataplan monitor
personal ip address
simple brightness applet
supertux
the urquan masters
tutorial home applet
xournal
zoutube

Can I delete all the installers? Also whats the tutorial home applet?

I dont user devs or extras. Id rather wait for stable releases