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Creating a Music Source
Before you create your server, you have to create something to play. This section describes how to create an Ogg Vorbis file to play. We assume that you want to create a file from a commercial music CD. This practice is legal, and does not violate copyright law because you don’t create a server that is broadcast on the Internet. Instead, you’re creating a server that is broadcast to a private network (yours). As far as we know, you’re still allowed to listen to your own CDs.Technical StuffThe Ogg Vorbis audio formatting system is similar in function to MP3. However, Ogg Vorbis — or Ogg, for short — is an open source format (also known as a codec) and, unlike MP3, doesn’t have any proprietary algorithms or protocols. Ogg also provides higher fidelity than other formats. Ogg Vorbis is really two separate entities: Ogg is an audio compression format, and Vorbis is an encoding system.Follow these steps to create an Ogg-Vorbis-formatted music file:Log in to your computer as any user and insert an audio CD.
Click the GNOME Menu button and choose Sound & VideoMore Sound & Video ApplicationsGrip.
The Grip window opens and the CD’s tracks are displayed in the initial Grip window.
Click the Rip column (on the right side of the screen) of each track you want to use.
A check mark appears next to each track you select.
Click the Config tab.
A subwindow opens, showing several additional tabs.
Click the Encode tab in the subwindow.
Another subwindow opens that shows several configuration options.
Click the Encoder pull-down menu (showing the default bladennc) and select oggenc.
Selecting oggenc tells Grip to create Ogg-encoded music files.
Click the Rip tab at the top of the window (next to the Tracks tab).
Click the Rip+Encode button.
Grip rips the music from the CD to files on your computer. The files are stored in a subdirectory named ogg in your current working directory.
Technical StuffGrip doesn’t do the CD ripping work. Grip does its thing by starting the cdparanoia program and feeding it the parameters you just selected. The tracks are ripped and initially saved in Wave format. After cdparanoia finishes, Grip starts the oggenc utility and coverts the Wave files to Ogg format.TipYou can convert from Wave to Ogg format by running this command in a terminal emulator: oggenc *wav. You can play Ogg-encoded files: ogg123 xyz.wav.You now have one or more Ogg-Vorbis-formatted audio files. You have to install and configure Icecast2 and Ices2 to broadcast music to yourself.
