Encoding: wave"
Audio Source: E:\Temp\Greatest
Audio Destination: nul"

[download]

That makes it seem like a quoting issue I think. Unfortunately that's a nontrivial issue on Windows since, unlike *NIX, the command being called could be at fault too. Could you make sure you have the latest versions of IPC::Run3 and Win32::ShellQuote installed, and set the environment variable IPCRUN3DEBUG=1 and report the output of that?

In reply to Re: Need help with IPC::run3 by haukex
in thread Need help with IPC::run3 by freonpsandoz

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