If the music is in mp3 format, you most likely won't be able to get rid of the spaces unless you specify a disc-at-once option. This burns without turning the laser off, which can sometimes reduce spaces between songs. However, with the mp3 format, spaces are automatically inserted in between songs due to restrictions of the audio format. Music CD's normally contain music burned in uncompressed WAV format, since this allows for continuous playback.
If the spaces are within the actual music track itself (for example, if you have music in WAV format but the spaces still appear) you can use a piece of freeware called audacity to remove them. See my source for more details. Hope that answers your question!
