[cisco-voip] "iPod" audio to multicast and then back to standard audio devices?

[Robert Kulagowski]

As part of the "multicast speakers" thread, we're looking at how to inject 
audio into the multicast groups that the multicast speakers are capable of 
using.  (Think, analog iPod output into a box that does the conversion for 
background music, but it could be any standard analog source)

I see that the 1861 routers have an audio input, but we don't have those.

Cyberdata, the company which we used for their SIP-to-multicast paging 
server and multicast speakers doesn't offer anything like that.

Also, in certain areas, there's going to be a contractor-installed A/V 
suite (training rooms) where speakers will already exist, and we can't do 
much with the suite since it's a turn-key.

However, if we have a multicast-to-audio device, then we can tell the A/V 
contractor, "here's another audio source".

Any products in this space which you like / work well?