Re: [SoX-users] Keep multiple files AND merge into one file

[fmiser <fm...@gm...>]

> Ryan wrote:
> 
> I have a dir which mp3s are regularly added to one at a
> time. Each time an mp3 is added, I would like to copy it
> onto the end of another file while keeping the separate
> files.

> Is there any way to simply add each new file (one at a
> time, as they show up) to the end of master.mp3 *without*
> overwriting the previous content of the other mp3 files?

I use GNU/Linux and heavily use BASH - so if that's not your
platform, my idea may not help much.

My first thought is to use a shell script and write a
temporary file.  Concatenate the latest mp3 and master.mp3
and write temp-master.mp3.  The re-name/move temp-master.mp3
to overwrite master.mp3

However, mp3 is a lossy format and SoX _always_ re-encodes.
So every time the script runs there would be additional
losses.  Probably not too bad for 3 or 4 files - but if there
are 30 or 40 the early ones could be sounding pretty poor.

My system has a tool called "mp3join" that concatenates MP3
files without re-encoding.  That might be a better option.

-- fm