First thing is first take a deep breath and just chuckle at the situation for abit.
Once your done, open that computer case and remove the sound blaster audigy for now.
Boot into safe mode get rid of the sound blasters drivers the correct way, then you want to look at your onboard sound cards status.
Go to device manager click on the sounbd card to the tab where it says driver navigate to one more tab and see what it says.
If it says this sound card is working properly do a check and see if you can get some STABLE
sound card drivers.
If you do install it, once it's done reboot, then I want you to go to VGMusic - 30,519 Game Music MIDI files
and download a simple midi song.
If that midi plays fine without lag, try a mp3 if that works, your final step is to open up task manager and look at the cpu and system resources and tell me whats going on, if the onoboard sound stops going berserk something else could be at fault and the main culprit.