mass-renamer tool

[David Csercsics]

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>Hi gang.  Anyone got any scripts or know of where I can find some tools 
>to do some mass-renaming?  For example, I have lots of audio files which 
>are named:
>
>12-song-title.ogg
>
>And I'd like to mass rename them to:
>
>Artist_-_songtitle.ogg
>
>Or something to that affect.  I've triewd writing my own script but keep 
>running into problems with the spaces in the files because wsith the mv 
>command they need to be escaped.  It's not as easy as poutting '' around 
>them.
>
>Any ideas or suggestions?
Write it in perl or C or Python or something that's not going to
treat spaces specially.