Here is how to convert a folder of mp3’s into ulaws
cd /mp3folder
for f in ls *.mp3 ; do FILE=$(basename $f .mp3) ; ffmpeg -i $FILE.mp3 -ar 8000 -ac 1 -ab 64 $FILE.wav -ar 8000 -ac 1 -ab 64 -f mulaw $FILE.pcm -map 0:0 -map 0:0 ; done
so the real question is this:
How to get my mp3’s onto the appliance?