Stripping whitespace in bash script

Hi All, I'm working on a script which extracts the tags from ogg and mp3 files and distributes the files in a directory structure according to the tag contents. I've found that some files have tags with excess whitespace at the end. What methods are there for removing this whitespace in a bash script? Thanks Dylan -- "The man who strikes first admits that his ideas have given out." (Chinese Proverb)