Removing ".flac" from song titile

Hello,
I have a song: Eric Burdon & The Animals - San Francisco Nights.flac.mp3

I want to remove ".flac" from the title

Resulting in :Eric Burdon & The Animals - San Francisco Nights.mp3

If you can help
thanks

Can you be a liitle bit more specific?
How looks the filename?
How looks the title tag field?
What should be changed?

DD.20090626.0925.CEST

Name of action group: format value

Action type: Replace
Field: _FILENAME
Original: .flac
Replace with:

[ ] only as whole word

[ ] case-sensitive comparison

replace .flac with nothing

Thanks worked perfect!