Opening a DVD ISO file works when you open it from the File->Open menu, but not if you give it as a parameter for Parole, eg.
Effects Pasi Lallinaho on Parole 0.7.0 with Xubuntu 14.10.
Effects MatthewAllen on Parole 0.8.1 with Ubuntu 15.10.
Steps to reproduce:
1) Open Terminal
2) $ parole test.iso
Expected Result: The ISO opens and begins playing.
Actual Result: Parole opens but does nothing.
Also see: https://bugs.launchpad.net/ubuntu/+source/parole/+bug/1433351
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