Symptom
There are long gaps between songs on custom audio CDs that you burn with iTunes.
Solution
Some or all of the songs you used to burn the audio CD already have gaps, and iTunes is inserting additional time between songs. You should reduce the amount of time iTunes inserts between songs.
1. Choose Preferences from the Edit menu.
2. Click the Advanced tab.
3. Choose a shorter length of time, perhaps None, from the Gap Between Tracks pop-up menu.
4. Insert a blank CD-R disc.
5. Click Burn CD.