MUPromo is offering iVolume today for $14.95 (50% off the regular price of $29.95).
Buy it here: http://www.mupromo.com/
“Tired of constantly adjusting your music’s volume? iVolume ensures that all your songs play at the same volume level. iVolume calculates the volume perceived by the human ear for each song of your iTunes music collection. Thereby iVolume gets the most out of the approved Replay Gain algorithm and adjusts your songs accordingly.”
*Purchase Supports Mac App Deals