Here's the two very simple, short scripts I use to take my existing flac directories and build mp3's from them ... oggs will come later on. Who knows if this bbs will eat the code ... if you have problems, let me know.

dir2mp3 take a flac directory as an argument.
flac-to-mp3.sh is run by the above script, but can also be manually run with a flac file as an argument.

#######################
#dirtomp3.sh:
#!/bin/sh
for i in `find "$1" -name '*.flac' -print | sed 's/ /\\\\040/g'` ;
do
fullpath=`echo -e $i`
#echo "File: $fullpath"
/share/flac/flac-mp3.sh "$fullpath"
# important to enclose any operations
# on the file in double-quotes
done

#######################
#flac-to-mp3.sh:
#!/bin/sh
i=$1
o=/share/music/xfer/${i%.flac}.mp3
echo Converting $i
echo to $o ...
mkdir -p "$o"
rm -r "$o"
flac -c -d "$i" | lame --vbr-mtrh --nohist -V 3 -k - "$o"
id3cp -2 "$i" "$o"