audio editing

It is advanced video editing and compositing software with over 150 built-in.

Multimedia authoring, movie editing software (was MovieWorks Deluxe).

geared towards viewing / editing Mac OS X's preference files

Improves audio quality and adds audio options system-wide.

Convert audio files into Core Audio Format (.caf).

replace audio, adjust audio volume, trim, crop and merge videos

Convert popular video and audio files to MP4 video and audio formats for Mac.

Jack (the Jack Audio Connection Kit) is a low-latency audio server.

convert between any audio/video formats,rip DVD to any video, even audio format

convert video/audio files to M4A, and convert M4A to other audio formats on Mac