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Altacast Main Window.png
Main window of Altacast
Original author(s) Ed Zaleski
Initial release April 2001; 15 years ago (2001-04) (as OddCast)[1]
October 30, 2011 (2011-10-30) (as EdCast)[2]
September 3, 2012 (2012-09-03) (as AltaCast)
Stable release
Standalone / DSP: 1.0
RadioDJ plugin: 2.5.5 / Standalone / DSP: September 3, 2012; 4 years ago (2012-09-03)
RadioDJ plugin: March 19, 2016; 11 months ago (2016-03-19)
Development status Active
Written in Standalone /DSP: Visual C++
RadioDJ plugin: .NET Framework
Operating system Microsoft Windows
Platform x86, x64
Size Windows: 2.2 MB
Type Streaming media
License Free and Open source GPL (Standalone / DSP)
Proprietary (RadioDJ plugin) [3]
Industry Internet Radio Software
Founded Chicago, IL (60067)
Headquarters Chicago, IL, United States
Key people
Ed Zaleski, Founder
Number of employees

Altacast (formerly known as Edcast and Oddcast) is a free and open source audio encoder that can be used to create Internet streams of varying types. Many independent and commercial broadcasters use Altacast to create Internet radio stations, such as those listed on the Icecast, Loudcaster and Shoutcast station directories.


The original streaming software, Oddcast, was developed from 2000 to 2010. The official site at hosted streaming media tools, which included Oddcast, Stream Transcoder, Icecast Station Browser plugin, Song Requester plugin and Do Something plugin.[4] In late November 2010, was shut down.[5]

Edcast, a fork of Oddcast, is being updated and hosted at Club RIO. In early 2012, development of Edcast was moved to Google Code and SourceForge. As of October 30, 2011, the latest stable version is 3.33.2011.1026 and the latest beta version is 3.37.2011.1214.

In September 2012, a second fork, Altacast was released. The Standalone & DSP edition are derived from GPL software and is available on GitHub,[6] while the RadioDJ edition is written in .NET Framework and developed separately. A version 2.0 for the Standalone & DSP edition that will be SHOUTcast v2 compatible is planned for the future.

Although Altacast is available as a plugin for RadioDJ. Altacast is not supported by the developer of RadioDJ due to legal issues.[7]


Altacast is supported on Windows. It will run in conjunction with various media players compatible with Winamp plugins, such as AIMP, JetAudio, KMPlayer, MediaMonkey, MusicBee and foobar2000, as well as a standalone encoder.

Altacast Standalone & DSP can stream to Icecast and SHOUTcast servers in Ogg Vorbis and Ogg FLAC out-of-the-box. MP3, AAC and AAC+ support can be added via the LAME encoder (lame_enc.dll), FAAC encoder (libFAAC.dll), and CT-aacPlus encoder (enc_aacplus.dll obtainable from Winamp 5.61)[8] respectively. Adjustable settings for each encoder include bitrate (for MP3, AAC+, Ogg Vorbis), quality (for AAC, Ogg Vorbis), sample rate (22050 Hz or 44100 Hz) and channels (Parametric Stereo is available for AAC+ up till 56kbps).

SHOUTcast v2 is currently not officially supported in Altacast Standalone & DSP. However, it is possible to connect to stream ID no. 1 of a SHOUTcast v2 server in legacy (v1) mode. As a temporary workaround, the SHOUTcast DSP 1.9.2 plugin for Winamp-compatible media players may be used to broadcast to alternate mount points (e.g. stream ID no. 2).

SHOUTcast v2 and Opus support is available in v1.4 onwards in the plugin.

See also[edit]


External links[edit]