QUOTE (egd @ Jan 8 2010, 10:55)
... If it's empty, it prompts you for a name. What I'm suggesting is that if it comes up empty and there's text in the clipboard, then use that as the suggested lookup name and present it to you for confirmation, ...
This sounds to me as if you only need a button "Get ClipBoard Text" to click to get the clipboard text content, if any, into the blank edit field.
But ... this implies that there is useful content on the clipboard in any case.
In the case that there is some text content, but accidentally left over from another application, this text would be inserted into the edit field. You will detect the failure by your eyes and then have to remove or overwriting the entry, e. g. pressing [Del] key if the edit field is still selected, otherwise by [Ctrl]+[A] followed by [Del] or simply by [Ctrl]+[X] or by using right mouse click and edit field contextmenu and so on. I expect rather too much complications.
So what the heck, what hinders you to go the simple standard way?
Switch to the other application which offers the search text entry, copy this text to clipboard, switch to Mp3tag, paste the clipboard content into the edit field.
... and you will always have the well selected content in the edit field.
There might be another way to go ...
Find out a way how the other application can watch Mp3tag's child windows, if the one search entry comes up with a blank edit field, then let the watcher application fill in the search text item into Mp3tag's edit field. :-))