[Bashburn-info] Some updates

[A. L. <and...@gm...>]

I added a convert_audio.sh file which will replace
convert_mp3/ogg/flac.sh. Also got rid of the error message about
returning a non-numerical value by rewriting the check_for_*
functions. Added function convert_if_exist which check if files with
the supplied file extension exists, and if so runs the appropriate
converting function.

I'm sure the code can be improved (It's late here dammit) so check it out.

-- 
Anders Lindén

http://bashburn.sf.net