Thanks for responding! With this one, also required me to install IOAudioFamily.kext, and now in system preferences it shows "Headphones" all the time, instead of only when headphones are plugged in like before. I am able to get sound from headphones when they are plugged in, but not internal speakers at all. Attached are the files you requested. Also, thanks for your Elan trackpad kext, its working great on this machine
system.zip
uuufo-ioreg.ioreg.zip