you are the only one with this problem mate,try making a backup with cwm,then reflash the ftf file(do a full flash) and after that try flashing each update.When flashing updates don't flash all of them together,flash one and boot to os then flash next
If you want those controls that much use CM9 player
http://www.seeingpixels.org/2012/01/cyanogenmod-9-music_16.html
its kinda better than xperia s player,at least for my taste xd
ok I will try this ..but now I copyied conversation.apk and it works great for me but write a new message button in main screen (on top right of app) is not fit to its row and its good that you change its width to become fit in its parent...
about player I like to use sonyies player ..I am considering that you have no time to fix this ..so I will wait
thanks for your great work