Renegade X features some outstanding music. Unfortunately you don't hear much of it in the current build. The Renegade X team are aware of this and we've heard that they plan to implement an in-game jukebox. In the meantime, you can listen to this great sounding track called "Tension Rising".
If you want the Renegade X soundtrack, grab it using the link below.
The "Tension Rising" track can be heard in the main Renegade X menu, also known as the front-end.