Solution to music imported from CDs from the 80s- early 90s!
Great software for boosting the volume level of music. I had tried iTunes built in "Sound-Check" but found it problematic, it really didnt get at the heart of the issue.
The only complaint, and it is really minor, really is that it doesnt have an option of boosting the bass a little for these tracks. It appears music from 98 to today is mostly highly compressed with tons of bass, a little bit jarring going from Erasure to LaRoux and finding theres a huge difference still with the bass. Audiophiles will tell you thought that the reason behind this is because everyone is listening to their stuff on poor quality equipment these days with very weak amplifiers and poor bass response. But I do digress, this is an affordable solution to your volume differences in your iTunes library.
acurrentz about Smart Gain, v1.1