QuickTime 6.5.1 offers a series of improvements, Apple reveals, including:
Apple Lossless Encoder, a new lossless audio codec that retains the full quality of uncompressed CD audio while requiring only about half the storage space.
Significant improvements to AAC encoding, resulting in high-quality sound over a full range of audio frequencies.
Enhanced support for iTunes and other QuickTime-based applications.
QuickTime 6 already supports MPEG-4, 3GPP and 3GPP2 and multiple other formats. The software also offers Instant On streaming, providing immediate access to media with no buffer delays.
QuickTime 6 also includes an instrument sound set licensed from Roland Corporation that makes a complete General MIDI compatible sound set.