I have two songs, set to play one after the other. The second song comes in at a much higher volume. How do I make sure both songs are the same volume so there is no jump?
If you use a mixing software, try using Normalization settings. Every software has this option to prevent bad mixing or use Audacity and modify the output volume for the second track. You can do this from the slider under the tracks's name at the beginning of the waveform specter.