ISO's cannot be opened with Parole as a parameter

Submitted by who..@..il.com

Assigned to Simon Steinbeiß @ochosi

Link to original bug (#12380)

Description

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. parole filename.iso

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

Version: 0.8.0