I do quite a bit of MP3 encoding (many hours worth of audio) for my
lectures. I have a multi core CPU and it seems that LAME can't do
multi threaded MP3 encoding. I've searched and the best answer I could
find was that "MP3 encoding is not suited for multiple CPUs". So I did
an experiment where I take an hour and a half long audio file and
encode it to a single MP3 file. I end up with a 95.7MB MP3 file. I
then split the audio file 8 times and encoded each piece. The sum of
the size of 8 MP3 files is again 95.7MB (+/- a few KB I assume). So I
don't see any loss in size efficiency by splitting an audio track 8
times and encoding each piece.

I did the test in Audacity, but it encodes each piece sequentially
instead of at the same time. I might be able to write a script to
split a raw audio file into 8 pieces, encode each in its own thread,
and join the 8 pieces into one large file.

Any thoughts on this?

I should be able to join MP3s without re-encoding, right?
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