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I have N MP3 files (N files for example). I need to superimpose, or mix them into one. Is there a special LAME function for performing such an operation?

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Is this programming related? – dtb Mar 28 '10 at 23:50
@dtb - yea. LAME is a library. – Daniel A. White Mar 28 '10 at 23:52
Do you want to reencode them or to splice the channels mono -> stereo? – Potatoswatter Mar 29 '10 at 1:02
"How do I do $FOO using tool N" is presupposing part of your answer if what you really want to know is "How do I do $FOO"; sometimes, tool N isn't the right thing for the job. "How do I do $FOO on platform N", or "How do I do $FOO in a manner compatible with N" are better questions. – Charles Duffy Mar 29 '10 at 2:40
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2 Answers

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LAME is the wrong tool for mixing -- mixing isn't encoding.

Do the mixing with a tool such as sox, then encode the mixed stream with LAME.

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up vote 2 down vote

Use Audacity to mix them, and Audacity will then use the LAME encoder to encode the mixed audio as MP3.

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