A Music Stream Manager used in my 3-D final project: You Die First!

This Manager allows music to fade in and out in the correct spots in You Die First.  There are 4 "types of streams used.  The outdoor stream for when you are outdoors, the indoor stream for when you are inside a saloon, the muffled indoor stream for when you are right ouside a saloon, and the combat stream for when you are fighting.  The sound manager that was used in the game only allows for 3 streams at one time so I had to switch out which streams were loaded depending on which ones were being played.