I will be more verbose. There are two new custom command places in 0.5.1 the first is in the Media/content heading Custom command(%u for URI) _____________________ the second is in Transfers Custom command (%f for filename) _____________________ ... I tried Code: ffmpeg -i %f %f.m4a hoping it was just lame acting weird, but no luck again.
ffmpeg -i %f %f.m4a
/opt/cutetube2/bin/cutetube2 -v 5
cd <path where cutubefiles stores downloads> ls -ltra |tail
/usr/bin/ffmpeg -i "%f" -vn -acodec copy "%f".m4a