Some of the programs do prompt to the user, however most of the programs do not. For eg: If you have installed another web browser in addition to Internet Explorer, you can specify that you want to use that browser as your default program for opening web based content instead of Internet Explorer when the program is launched for the first time.
mp3 files by default will play on Winamp and not Windows media player. Basically, the File extension associations gets over-ridden when a new software is installed. For instance, when you install Winamp Player on Windows, the.
When you have multiple browsers or media players on a single machine, the latest software you installed takes all the Default Program file Associations.
