SyncHole

SyncHole is a set of Winamp plugins (one General, one DSP) that allow an arbitrary number of Winamps to be synchronized over a network, producing the effect of a single, all-encompassing Winamp.

One Winamp will run the General plugin in Server mode, and all of the other Winamps will run it in Client mode. The server commands the clients to play the same physical file that it's playing, and also relays to them any Play/Stop/Rewind/etc. commands that are entered in its own local interface. The server also periodically polls the clients to ask for their current position in the file being played. If necessary, it commands them to momentarily speed up or slow down their playback in order to synchronize with the server's current file position.

The DSP plugin is used by the clients to synch themselves with the server. When a speed-up is needed, the audio waveform is horizontally compressed, and when a slow-down is needed, it's expanded.