An alternative to Broadwave is ShoutCast which is able to stream music from your computer freely using an Active Directory or through a custom URL created using the IP of your computer.
Also, Broadwave is easily uninstalled via the Control panel from Add/Remove Programs. It does not have special requirements regarding its uninstall operation.
If you are not satisfied with ShoutCast, you can use SopCast and VLC to stream audio and video over Internet.