[Gnump3d-users] Using downsampling to recode .ogg to .mp3

[amaya]

Hello all --

I'm trying to persuade gnump3d to recode my ogg files to mp3 when 
downsampling. Enough of my friends are non-technical enough to make the 
hassle of recoding the files less than the hassle of explaing what an ogg 
file is and how to play it. :) That being said, I'm trying something like 
the following line in gnump3d.conf:

  downsample_medium_ogg = \
    /usr/bin/oggdec --raw -b 16 -e 1 -o - $FILENAME | \
    /usr/bin/lame -r -s 44.1 -m j -b 64 - -

I apparently need the --raw flag since I'm writing to stdout (i.e., as 
opposed to the default .wav output). The flags on /usr/bin/lame tell lame 
to assume raw pcm data, and give it (what I hope are) all the necessary 
parameters of the data. These combinations of options come from some time 
spent hunting through manpages and trial-and-error.

My problem is that it isn't working. The command above works just fine on 
the command line. In gnump3d, however, no ogg file plays, and the error 
log contains:

  Error writing to file: Broken pipe
  Error writing mp3 output

which isn't terribly helpful.

For the record, gnump3d -v gives:
  gnump3d v2.9.7 [CVS Info: gnump3d2 1.109 (2005/10/28)] on Perl v5.008006

If any one can shed some light on this, I'd be mighty appreciative.

Thanks,
Austin