Synergy is a tiny Cocoa application for Mac OS X 10.2 (and later) that puts three buttons to control iTunes in your menubar: previous track, next track, and play/pause. It also provides you with visual feedback about the currently playing tune and allows you to control iTunes via system-wide hot key combinations. These features provide a very fast way of skipping between songs when using the keyboard or the mouse, without having to switch to iTunes or access its Dock menu.
recorder.xhead is a voice recording application that can save sounds in .mp3, .mp4, .aif, .avi, .mov, or .wav format. Users can create a playlist of recorded sound, search it iTunes-style, and even export it to iTunes so that they can take voice memos on the road on an iPod. It plays audio streams, and comes with a bulk file conversion utility to convert between file formats.
XO Wave is a digital audio workstation designed to meet the needs of audio and video professionals, with a focus on CD mastering and audio for video work. XO Wave provides professional-grade capabilities for manipulating audio, with a familiar and elegant interface. It supports direct recording from any Core Audio device (ALSA/Jack/OSS on Linux), importing and exporting files in a variety of formats (including songs from iTunes playlists), CD burning, multi-track editing, support for many Audio Units, and QuickTime synchronization and export.
Boom Recorder is a software field audio-recorder. It can be used in combination with high-resolution audio hardware, intended to be used to record live stage and film set performances. It support 16, 24, and 32 bit sample formats, high sample frequencies, and 128 channel recording. It is able to decode time code signals that are fed to any audio channel, and will add this and other metadata as iXML in BWF (Broadcast Wave Format) and CAF (Core Audio Format) files.
Music Box is a handy database for your music files. If you have a large collection of them, it will help you to organize and keep them in order. Tracks can be grouped by artist, album, genre, volume, or category. Tracks can be organized into as many categories and subcategories as you need. A search function allows you to find the CD or DVD on which you stored your tracks. Music Box reads and edits the metadata information of the tracks (ID3 tags, iTunes AAC tags, etc.). The MP3, AAC, MP4, Ogg Vorbis, Monkey's Audio, and FLAC formats are supported. Music Box's data can be exported to HTML, text, or XML.
Phelix is a duplicate file removal tool with an acoustical audio matcher. Duplicates with bad or missing music tags but the same or similar sound will be detected by the matcher, even if audio signals are shifted, start at different moments, are ripped with different bit rates, or are ripped with different volumes. It is designed to work well on multi-core systems. Files are never deleted, but are moved to another directory for inspection.
TwistedWave is a very easy-to-use and powerful audio editor. It supports Audio Unit plug-ins and many file formats, including wav, aiff, caf, mp3, mp4, FLAC, and Ogg Vorbis. It has good multichannel support, so you can apply Audio Units to a selection of channels. It supports unlimited undo and redo, which work instantly. Zooming in and moving around the waveform is very fast, even with very large files. All the effects are applied in the background, saving a lot of time.
Renoise is a sophisticated music sequencer and audio processing application. It's an all-in-one music production environment for your personal computer. Based on MOD tracker software, its primary use is the composition of music using samples, (in WAV, AIFF, FLAC, Ogg, and MP3 format), plug-ins, and MIDI/OSC sequencing of VSTi/AudioUnits soft synths.