How to remove dsp plugin

[rama_d]

Hi there..

I've installed Thimeo Stereo Tool, a DSP plugin originally for winamp.
Last week there is an update for this plugin, so i delete dsp_stereo_tool.dll file from musicbee plugin folder (C:\Program Files (x86)\MusicBee\Plugins), and importing a new one by clicking Import Winamp button in Equaliser and DSP Settings.
But now there is 3 Thimeo Stereo Tool entry in the DSP Plugin list, each one is exactly have same name and description (screenshot here
http://imgur.com/a/XbjR2).
How do I fix this? Deleting the dll file will remove all the Thimeo plugin from the list, and copying a new dll will make the 3 Thimeo plugin appear again.

Thank you, and sorry for my bad english.