Auricula Software has released Meatus, the latest addition to its AU Suite of Ear Training Plug-ins.
Meatus simulates different acoustic environments, such as concert halls, echo chambers, rooms and more... Your source material will sound as if it were actually recorded in a different space. Can you tell which space? Meatus also simulates different artificial reverbs. Best used on individual tracks, not mixes.
Meatus is available as an AU plug-in for Mac OS X. The AU Suite plug-in bundle costs $8.99.