Non RHH: i need some help. think you can help me?

alright so i just ripped Ludacris' The Preview mixtape to my media player and i wanted to sync it to my MP3 player. but when i started the sync, it said that Lupe Fiasco's The Cool would be removed. i have a 4gb sansa e260 if it helps and i have 1gb of space left is there anything i can do besides buying a micro sd card to make more room.