I would mix them separately using sox. Sox will let you change the volume level of the music so that you can make it sound like it&#39;s in the background. Something like this:<div><br></div><div>sox -v .5 music.wav human.wav output.wav</div>
<div><br></div><div>It&#39;s probably going to be a bit more complicated than that but since you&#39;re smart enough to be using FreeSWITCH then you should be able to figure it out. ;) If you need more help then hop on the #freeswitch channel on <a href="http://irc.freenode.net">irc.freenode.net</a>.</div>
<div><br></div><div>-MC<br><br><div class="gmail_quote">On Fri, Dec 2, 2011 at 1:40 PM, Pankaj Upadhyay <span dir="ltr">&lt;<a href="mailto:jaknap34@gmail.com">jaknap34@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
 Hi all,<div><br></div><div> I am new freeswitch user.</div><div><br></div><div> I need to record the user voice/songs with music that selected earlier </div><div> and this music plays in background . That is results comes as mix up of both songs</div>






<div> i.e music in background and voice records in foreground .</div><div><br></div><div> I want to dedicate this mix up file to other user..</div><div> Can I patchup these two files seperately..into one file ? or simultaneouly do recording  </div>



<div> with playing music in background ......and if so ..then please guide me..how can i do it ?</div>

<div><span><br></span></div><div><span> Any help will be highly appreciated.</span></div>
<div><span><br></span></div><div><span> Thanks .</span></div><div><span><br></span></div><div><span><br></span></div>

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