transcode --avi_limit -o -m

I want to split big avi-files (4-5GB), which could be done with avisplit, but 
since I have to transcode anyway I thought I do splitting in one step:


transcode -i "$FILE" -x ffmpeg \
		-N 0x1 -y ffmpeg,tcaud -F ffv1 \
		--avi_limit 512 -o "$VIDEOFILE" -m "$AUDIOFILE"

The result is like this:
x.0001.avi
x.0001.avi-000
x.0001.avi-001
x.001.pcm

How do I a get names, that have .avi at the end and a ls sorts the parts as 
the big avi-file is. I mean x.0001.avi is the last part and ls lists it first.

If I do it like above, I get no splitted audio files, but only the audio from 
the last part.

Al