Cast: Set correct offset when switching between local and casting.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@3989 104adb81-38d2-4886-885e-82898e39ce25
Cast: Simplified timer.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@3990 104adb81-38d2-4886-885e-82898e39ce25
Cast: Simplified player states

git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@3991 104adb81-38d2-4886-885e-82898e39ce25
Cast: Log player state

git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@3992 104adb81-38d2-4886-885e-82898e39ce25
Cast: Make it work on other browsers.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@3993 104adb81-38d2-4886-885e-82898e39ce25