You should turn on the Comb option in your Skeinforge settings before converting it to gCode to help keep the cleanup of hairs during printing to a minimum.
Use a knife to clean up any rough spots and possibly a needle file to size the cleats to your earphone wires for the best fit.
Version 0.1 was printed in class and was fully functional 'as is' with a little cleanup with a knife.
Version 0.2 should look and print better but is currently untested.
I've included the Rhino3d source file as well as STEP export if anyone wants to make any changes for their particular device.