How to change audio file name in a pipeline?

[joecfd]

An audio file is streamed to another machine. My code works fine. 
Is it possible to change audio file name without destroying pipeline(do not
want to change the connection)?
If the current pipeline has to be destroyed, how to do it in a clean way?
I tried to delete all elements in the pipeline. I got either crash or memory
leak.
Recreated pipeline will not generate any sound if I simply let them leak.

Thanks a lot for your help!



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