I used to think, the Media Buttons in my Dell Inspiron 1420 Notebooks can not be used to control the Winamp program, but when i try to search it through the internet i found the plugin for winamp to use the media buttons to control the winamp such as Play, Next, Stop, etc..

its just so simple, just follow the link below we can Dell media buttons to control Winamp, follow the instructions to download the plugin and you ready to control Winamp using Dell Media Buttons..

http://www.winamp.com/plugin/dell-inspiron-media-buttons/146178

according to the site, this plug-in is to Enable Dell Media Buttons for Dell Inspiron models: 6000, 8500, 8600, 9100, 9200, 9300 and XPS Gen 1 and 2

but, when i tested on Dell Inspiron 1420, its works fine