Need a text editor/program that can delete part of a line of text based on a string

[JMMD]

I have a list of all my MP3's in a text file. I want to delete everything on the line except for Artist - Song Name.mp3.

For example:
Green Day - Armatage Shanks.mp3 ::INFO:: 2.68Mb 2m17s 160/44.10/JS

I want to delete everything starting at ::INFO::

 

[JMMD]

I figured it out. I had to learn about regular expressions in text editors.