If your system has a parallel port you can disable that, as well. I think that the newest motherboards are starting to do away with those, but unless you are using a line-printer from way back when, you will not be using the parallel port.
You can also review services that are running to see which you can alter to not automatically start. For example, if you do not have a printer hooked up to this computer, you could turn off the Print Spooler service. There are a bunch of network sharing ones too, that are used to broadcast your computer to the network and that sort of thing. Your audio-tweaked computer is likely not going to need those either. There is a Black Viper link out on the web that talks about which services you can safely turn off and which ones are needed for normal Windows processing. I think I saw it go by in one of the posts in this thread. That has good info in it. I think it is:
www.blackviper.com If you run into problems with services after turning them off, you can always start in safe mode and undo the carnage - just make sure to note which services you had tweaked and set them back.
Good luck,
Bob Bone