This is great!
Thanks for the explanation in the reddit post.
However after I've installed launchpad and mplayer, today , 10 hours after I set my Kindle3 to sleep I've got a notification about the battery being low (first time I get this).
Could mplayer be still active in the background draining the battery?
When you put the Kindle to sleep does the mplayer process is put to "sleep" as well?