Waterfall Streaming Service Question

[JeopardousRaven]

So I recently subscribed to Neal Morse's Waterfall streaming service because I wanted to explore the music of his band and other related groups like Transatlantic. However, the volume is jut too damn loud! I'm listening on my computer's lowest possible volume on decent headphones and it is simply way too loud for me to listen for more than 30 seconds. There doesn't seem to be any way to change the in-app volume like you can on Spotify either. Has anyone else had this issue, and if so is there any workaround?