[en] AudioLobe allows you to alter the speed of audio playback without changing the pitch rate. If you are a musician or interested in audio this means you can slow down complex sequences of audio without the vocal or instruments sounding unintelligible.

[en] NATIVE INSTRUMENTS : Products : Dj Line : Beatport Sync

[en es fr pt] Apple - iTunes - Download iTunes

[fr en es pt] Apple - Support - iTunes

[fr en es pt] Apple - Support - GarageBand

[en] Tag your iTunes music

[en] Soundflower is a Mac OS X (10.2 and later) system extension that allows applications to pass audio to other applications.

[en] a Jack implementation for Mac OS X

[en] SoundSource is a tiny tool for OS X enabling you to switch your audio input and output sources with a single click. And with the System setting, you can transfer system beeps to a secondary audio source so you won't be disturbed.