I would recommend for all of you to try to get ODIN working FIRST!!
Use it to 'restore' you're galaxy back to factory. You don't need to do this first, but its alot easier to have it working and ready in case you mess up this process. You can then Odin and start again, or give up
Thanks to mobileband, My420Time, rkhalil2009 (and anyone i missed?) We have a speakerphone fix. Unzip this to your sdcard.
http://shrunk.me/AudioVolume.zip
Then before rebooting do this:
mv /etc/AudioVolume.txt /etc/AudioVolume.old
cp /sdcard/AudoVolume.txt /etc
I'll update the first post