Comment 0 for bug 1573519

I want to use the program sox for volume statistics of Audiofiles and do on Windows:
f:>sox.exe "a.wav" -n stat
and get:
Samples read: 630784
Length (seconds): 2.972154
Scaled by: 2147483647.0
Maximum amplitude: 0.000153
Minimum amplitude: -0.000153
Midline amplitude: 0.000000
Mean norm: 0.000025
..and many more lines.

but in Sikulix with:

cmdout = run( soxPath + ' "f:\\<myfolder>\\a.wav" -n stat' )
print cmdout

i just get:

[info] runcmd: f:\<myfolfder>\sox.exe f:\<myfolder>\a.wav -n stat
0
*****error*****
Samples read: 630784

My question is, what kind of error occur and where are the remaning lines of the output?

PS: If the commands are put into a *.bat file and be called via run() the commandline breakes on a underscore (_) in the *.bat file path.