If you look at the description of the error you will see that the problem is that "The task is not running". This comes from Sound Input Read, so the problem is that the input task has stopped. The reason for that is that the buffer was filled because the VI was not reading it fast enough. Ultimately the reason for this is that the modification you made to the VI made the write task write far more data (and therefore take far more time) than the read task on each iteration. The read task can't keep up because it has to wait for the write task to finish writing before it can read more data.
There are a few ways to fix this. The first is to make the read task read in the full buffer on every iteration. You should be using 22050 as the first element (sample rate) and 100000 as the second (number of samples). Fixing those makes the VI run fine, but with glitches because now we're not writing data fast enough.
The second way to fix it (which would be better than the first) is to separate these two tasks into different threads which can run at different speeds. Put the read and write VIs in different while loops. Then you can read at one speed and write at another speed and keep both tasks happy.
I made a rough code with two loops. I would suggest using 100K for your Number of Samples/ch.
Regards,
Juan Galindo
Applications Engineer
National Instruments
