Bulk Rename Utility

I am needing a script to make every first letter a capital like in the following example
Neil Diamond - White Christmas.mp3

I also need it to correct the spacing in the dash/hyphen as in example 2

Neil Diamond - White Christmas.mp3 should be Neil Diamond - White Christmas.mp3
also it might be
Neil Diamond- White Christmas.mp3 should be Neil Diamond - White Christmas.mp3


thanks