The United States Conference of Catholic Bishops has several links for you to review and/or prepare for the Liturgical readings:

 t New American Bible

 t Today's Reading

 t Video Daily Reflections

 t PDA Formatted Readings

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If you want to listen to the readings instead of reading them, then visit PodCast Alley to listen to the free recordings. 

Notre Dame Prayercast allows you to download scripture and sacred music so you can take it with you on your iPod.