diff --git a/encode.bash b/encode.bash
index f697151..12a0b6f 100755
--- a/encode.bash
+++ b/encode.bash
@@ -2,12 +2,14 @@
 if [ -z "$1" ]
 then
 	echo "Provide a cast type!"
+	echo "$0 <cast type> <slug> [date]"
 	exit 1
 fi
 type=$1
 if [ -z "$2" ]
 then
 	echo "Provide a slug!"
+	echo "$0 <cast type> <slug> [date]"
 	exit 2
 fi
 slug=$2
@@ -23,6 +25,7 @@ else
 fi
 echo $date
 
+# assemble common values for tags/comments
 title="The Command Line ${date}"
 artist="Thomas Gideon"
 cover="${HOME}/Dropbox/Public/color_cover_art.jpg"
@@ -32,6 +35,7 @@ url="http://thecommandline.net/${post_date}/${slug}/"
 copyright="http://creativecommons.org/licenses/by-sa/3.0/us"
 comment="Weekly ${type} cast.  Email to feedback@thecommandline.net.  Show notes and license information for this episode at ${url}."
 
+# lossless encoding
 flac \
 --picture="|image/jpeg|||${cover}" \
 --tag=title="${title}" \
@@ -45,8 +49,9 @@ flac \
 --tag=copyright="${copyright}"  \
 cmdln.net_${date}.wav
 
+# AAC encoding, lossy
 faac -q 100 \
--b 96 \
+-b 112 \
 -c 44100 \
 -o cmdln.net_${date}.m4a \
 --title "${title}"  \
@@ -56,13 +61,30 @@ faac -q 100 \
 --genre "${genre}" \
 --writer "${artist}" \
 --comment "${comment}"  \
---cover-art ~/Dropbox/Public/color_cover_art.jpg \
+--cover-art "${cover}" \
 cmdln.net_${date}.wav
 
+# put together the just-so input file for mp4chaps
+echo "00:00:00.000 Start" > \
+cmdln.net_${date}.chapters.txt
+grep "{{offset|" ~/Documents/cmdln_notes/weekly_archive/${date}.notes | \
+sed -e "s/.*offset|\(.*\)}}.*|\(.*\)}}.*/\1 \2/" >> \
+cmdln.net_${date}.chapters.txt
+
+# write the chapter marks to the AAC/MP4 file
+mp4chaps -o -z -i cmdln.net_${date}.m4a
+
+# encode the Ogg Vorbis from the flac copies the tags/comments
+# already set into the flac file except the cover art;
+# using metaflac, can encode the binary block in flac
+# per the latest recommendations from Xiph for cover art
 oggenc \
+-q 4 \
 --comment=METADATA_BLOCK_PICTURE="$(metaflac --export-picture-to=- cmdln.net_${date}.flac| base64 -w 0)"  \
 cmdln.net_${date}.flac
 
+# encode lossy, MP3, adding ID3v2 tags for everything
+# *except* cover art
 lame -b 112 \
 --cbr \
 --tt "${title}" \
@@ -76,3 +98,8 @@ lame -b 112 \
 cmdln.net_${date}.wav \
 cmdln.net_${date}.mp3
 
+# lame package from Lucid lacks the --ti switch for image
+# found eyed3 via a web search
+eyeD3 --add-image ${cover}:FRONT_COVER \
+--set-text-frame="TCOP:${copyright}" \
+cmdln.net_${date}.mp3