Unusual Sound on Clean Install

[JacobT11]

Running KSP 1.0, unmodded. Audio sounds almost like a split second of the rocket engine firing sound. Happens throughout the game, when landed, when in flight, on EVA. Less when timewarping but still present. Doesn't occur during loading screens, on map view, at the KSC screen or in the VAB. Redownloaded KSP and the issue persists. Occurs on both saves, career and sandbox. Tends to occur slightly less frequently when engine is firing.

Output Log: https://www.dropbox.com/s/aj7c1syrdhkohte/output_log.txt?dl=0

System Specs:

Windows 7 x64

Intel i5 2410M 2.3GHz Quad Core

Nvidia GT525M 1GB

8GB RAM

Realtek ALC269 Sound Card