2) built-in/default windows sounds. (the "HDAUdIO deck" EQ shows activity when using mediaplayer)
3) 2.5" - 3.5" ata drive adapter. pins removed and soldered directly to it. and soldered to 1/8" jack. wire is 28awg. continuity has been tested w/ a multimeter from end to end with no problems and no shorts.
I'll see if I can get some good shots for you when I wake up tomorrow.