Hope that it's not already posted elsewhere (the search function is not working properly to me ATM)...
- First in the world FREE 2-Pass MPEG-4 AAC Encoder>
- Compression Ratios ranging from ultra high (58 CDs fit on one!) to High-End Audio (2.5:1), for absolutely perfect audiophile encodings >
- Crystal Clear, Award Winning Sound Quality at every compression ratio and bit rate!>
- Support for Embedded Album Art (Covers, Booklets, Lyrics!) >
- Store Entire Audio Album in a Single .mp4 File with all the Features of an Audio CD embedded inside, but at a fraction of the space!>
- Reference Quality MPEG-4 Audio Codec>
- Fully Compatible with the Latest Version of the State-of-the-art MPEG-4 Audio Standard (LC-AAC, HE-AAC and HE-AAC v2)>
Direct download link
There is also a dedicated thread at Hydrogenaudio.