You might also try uuid_displace API with the &quot;mux&quot; option, although I kind of like the idea of getting a group of uninhibited users all in a conference room singing &quot;Love Shack&quot; by the B52&#39;s.<br>-MC<br>
<br><div class="gmail_quote">On Sun, Oct 28, 2012 at 10:45 PM, SamyGo <span dir="ltr">&lt;<a href="mailto:govoiper@gmail.com" target="_blank">govoiper@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,<div><br></div><div>You should try using &quot;sox&quot; if there is nothing you&#39;ve found in freeswitch. Execute a system sox command and input the two recordings. Later the mixed audio can be played back to user.</div>

<div> </div><div>Another approach can be to use a conference bridge in which a local channel and the incoming caller are bridged and the conference is recorded. The recorded conference can be played back or used as well.</div>

<div><br></div><div>BR</div><div>Sammy</div><div><br></div><div><br><div class="gmail_quote"><div><div class="h5">On Mon, Oct 29, 2012 at 8:46 AM, Khue Nguyen Minh <span dir="ltr">&lt;<a href="mailto:khuenm@vega.com.vn" target="_blank">khuenm@vega.com.vn</a>&gt;</span> wrote:<br>

</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">Hi all,<div><br></div><div>I want create a js scripts to execute a simple karaoke application. When user make call to my system, js scripts will play a audio file and user can sing. The js scripts will record the song and mix it with audio that is playing. Now, I can create a js to play audio, record call but I don&#39;t know how I can mix audio. Please help me.</div>


<div><br></div><div>Thanks &amp; Best regards,</div><div>Khue.</div>
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