I remember you mentioning this in my boostn900 thread. Which is it you are referring to here? The fm transmitter or the audio to audio cables?

I am able to turn up the volume on different aspects of the N900 to any level I wish, I could even get a headset to blow, but the problem I face is dc output and as mentioned in your quote above, distortion issues leading to strange whines being heard....as is evident in my latest script. I'm still scratching my head as to whats causing the distortion issue in my script. So far I've only been able to reduce the distortion, but not remove it.