I want to make a couple of songs start playing after 30 seconds after the beginning and stop playing 30sec before the end. Is there a way to do this on rhythmbox? I know that itunes can do this, or I could use audacity but it would be easier if rhythmbox could.
I assume you are referring to the crossfade functionality in the music players. You can enable that feature in Rhythmbox also.
You're done. See a screenshot below