Projects / Jamulus


The Jamulus software enables musicians to perform real-time jam sessions over the Internet. There is a Jamulus server which collects the audio data from each Jamulus client, mixes the audio data, and sends the mix back to each client.

Operating Systems

Last announcement

The software name has changed to Jamulus 24 Feb 2013 16:15

With the new version 3.3.0, the name of the software has changed from "llcon" to "Jamulus". The project URLs are still the old ones (including llcon) and are not subject to change (at least not in the near future).

Recent releases

  •  25 Feb 2014 22:56

    Release Notes: A true stereo reverberation effect is added. In addition to the mono and stereo mode, this release has a mixed mono/stereo mode to support sound cards that have mono inputs for the instrument and microphone. The mixer fader solo state is stored in the initialization file. To reduce the audio drop outs, the stability is improved by introducing a separate thread for the network management. Unnecessary GUI controls are removed for a cleaner interface. A bug is fixed that caused the mixer fader changes to not be applied if the solo state was activated.

    •  30 Dec 2013 16:55

      Release Notes: The previous window positions are now recovered on software start, and new instrument pictures for "Recorder", "Streamer", and "Listener" are added. The solo states of the mixer faders are no longer exclusive. Sound card latency estimation is improved for the Windows version. A new OPUS version (1.1) was integrated, and utf8-coded strings are now correctly stored in the initialization file.

      •  24 Aug 2013 20:47

        Release Notes: The connection setup dialog can now be opened during a connection. This release adds three audio quality settings, "low", "normal", and "high".

        •  24 Mar 2013 19:27

          Release Notes: The OPUS codec is now enabled, which replaces the old CELT code. The mixer level settings are stored so that they are recovered on the next connection. The server performance is improved for the Linux version. A modified network buffer improves audio quality on lost network packets. The protocol overhead for DSL Internet connection lines is now considered for the upload rate indicator. Some outstanding renaming issues are fixed (llcon was renamed to Jamulus). The overall delay was not correctly calculated; this is fixed now.

          •  24 Feb 2013 16:10

            Release Notes: The software is renamed from "llcon" to "Jamulus". It supports an instrument picture on the mixer fader label (additional to the existing text). An optional server welcome message can be shown on a connection to the server. The source code is now compatible with Qt version 5. All text that is sent to/received from the server is now UTF-8 coded (allowing special characters, etc., to be used in the mixer fader text or chat messages).


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