Here is the script:
```
s = playlist("list.m3u")
# sox - - for stdin/out
ps = pipe(process="sox - -t wav - flanger", mksafe(s))
output.icecast(%mp3, mount="test", mksafe(ps))
```
I get:
```
[source:4] Source pipe_8899 gets up.
[pipe_8899:4] Starting process
...
[pipe_8899:4] Closing process's stdin
...
[mksafe:3] Switch to safe_blank.
```
And of course it's streaming blank. I tried to use `tee` to see pipe()'s
output, but I only get a truncated wav header. And the liq process uses 100% of
the cpu...
It works if I do it using the named pipe trick:
```
s = playlist("list.m3u")
ps = input.external("cat my_pipe")
# sox - output for stdin
output.external(%wav, "sox - -t wav my_pipe flanger", s)
output.icecast(%mp3, mount="test", mksafe(ps))
```
Any idea?
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