>Not even if the reason is to allow cueing of a track. I think it may 
>even be possible to allow this to work in sample sync if alsaplayer is 
>the app used to play the file.
>
>Eg1. I could cue the file using my headphones channel on a consumer card 
>and then click a switch in alsaplayer to allow the file to stream 
>through my pro card. As long as the file was paused between switching 
>channels it should retain sample sync because alsaplayer is sample accurate.

this will work already, but not if the 2 cards have different
interleave configurations. you just define a "multi" device, and use
it. either gang a bunch of similar consumer devices (e.g. 16 bit
stereo, interleaved) or use a big enough multichannel card. but not
both, until someone fixes the code (and it will hard to do, because it
messes with some core assumptions that JACK's alsa_driver uses to make
itself efficient).

>Eg2. I could set up three channels in ardour mixer for each alsaplayer 
>gui and then I just fade them in/out depending on what channel I want to 
>hear the file through. This would definitely loose sample sync but could 
>allow for some interesting time effects. Do you fancy the idea of 
>"ardour dub sessions"?

ditto.

--p

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