I believe there is a sensitivity slider in the Riing software for the sound mode... try adjusting that?
Or set your default sound output in Windows to 16bit/44kHz (CD Quality)?
The RGB fans offered by Thermal-take have propitiatory connectors . You would need to rewire the motor leads to the controller for the fan and I believe the LEDs share the DC Common.
I would not suggest this as it could cause problems and will most likely void the warrant. Not to mention that the Thermal-take Plus software is really bad right now and showing no signs of improvement. Most people cannot even get it to run and when it does it adversely affects other system components and creates instability.
I would suggest the NZXT AER fans if you are looking to control from a separate controller. The fans use a standard 4-pin PWM connector. and the led are on a separate connector to connect to the LED controller. One LED controller can control the leds on up to 10 fans. 5 per channel.