Here's a simple plugin I created which will search your library for text in your Windows Clipboard when you hit the assigned hotkey.
At the moment I have it searching for contents of the track title.
It's a pretty rudimentary plugin, but it definitely has room to grow.
Download Link:Click Here.
1. Drag mb_Clipboard-Search.dll from the Plugins folder to your MusicBee Plugins folder, typically located at: C:\Program Files (x86)\MusicBee\Plugins.
2. Open MusicBee and go to Edit > Edit Preferences > Plugins and enable mb_Clipboard-Search.
3. Go to the Hotkeys section of the Preferences Pane and scroll down to "General: Search for Clipboard Text". Assign a hotkey.
Screenshot of Hotkey Settings: