Orange Squeeze takes over the volume control for my device. Can I disable this?

Orange Squeeze doesn’t “take over” the volume control for your device. It contributes to it, very similar to how apps/systems like Chromecast handle remote device volume control. All of your other volume streams (Media, Ringtone, Alarms) are still there for you to choose from, but the operating system will decide on its own which one is active at any given time.

Starting in version 2.3.2 there is a preference in the “Advanced” section that allows you to disable the system volume control integration, if that is what you prefer.