Winamp is the famous media player in Windows. Now I have programmed the Winamp plugin to enable you to post the title which you are listening to on Twitter.
PostTwitter ver.0.11 (including source codes)
Unzip the archive and put the DLL file into Winamp's plugin directory. After that you should configure the plugin in menu [Options]-[Preferences]-[Plugins]-[General Purpose], and fill out your twitter account name and password to login. "Post Ratio" means how often the plugin posts the title into twitter, so it's suitable to set between 30% to 50%. If you set the post ratio 100%, plugin always post the title. it may be very annoying.
You can format the posting string with "Format" configuration area. "%s" will be replaced with the title playing now.