How to fill empty Title tag from filename without Track Nr

Many of my tracks have no Title tag so my music player, Foobar2000, populates its displayed Title with the file name - but this is prefixed with the track number so it looks like
nn Track Title
How can I select the tracks in MP3TAG and automatically populate the Title tag from the filename but without the track number? Currenty I manually type the Title.
I realise I could populate all the tags with data from an online database.

see the FAQs:

%track% %title%

and an almost identical question: