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+[[Translation:en/Basesets/OpenSFX]]
+
+'''OpenSFX''' 是一套免费/自由的 OpenTTD 基本音效，因此无需使用 TTD CD 中的文件（受版权保护）即可播放 OpenTTD。这有可能增加 OpenTTD 的粉丝数量。
+
+OpenSFX 即是'免费'的也是'自由'的。目前，OpenSFX 声音采用 CC Attribution-ShareAlike 3.0 Unported 许可。
+
+==下载 OpenSFX==
+OpenSFX 至少有三个下载地址。本自述仅涵盖官方下载地址。我们不支持第三方下载地址，如果您已为 OpenSFX 支付了费用，我们也无法退款。
+
+===获得稳定的版本===
+您可以从两个地方获得最新的稳定版本：
+* 如果您是 OpenTTD 的新用户，且无法访问原始 TTD 文件，则必须手动下载并安装 OpenSFX。这听起来并不难，所以不用太担心。
+** '''下载位置''': https://www.openttd.org/downloads/opensfx-releases/latest
+** '''安装说明''': [[#installing-opensfx-manually|手动安装 OpenSFX]].
+* 如果您已经使用原版 TTD 基本音效启动并运行 OpenTTD，那么游戏内在线内容服务是获取 OpenSFX 的简便方法。
+** '''下载位置''': 使用 [[en/Manual/Online content]] 服务;
+** '''Installation instructions''': [[#installing-or-updating-opensfx-using-the-online-content-service|Installing OpenSFX using the Online Content service]].
+
+==Installing OpenSFX Manually==
+'''1.''' First, make sure that you've [http://www.openttd.org/ downloaded] and [[en/Manual/Installation|installed]] at least '''OpenTTD version 0.8.0''' or a recent [[en/Archive/Community/Nightly build]].
+
+'''2.''' Next, download the latest OpenSFX package. ([https://www.openttd.org/downloads/opensfx-releases/latest.html latest version])
+
+'''3.''' Unpack the zip into the OpenTTD /data directory. There's no need to unpack the [https://www.wikipedia.org/wiki/Tar (file format) tar file], so just leave it as it is.
+Your OpenTTD /data directory is either located in:
+* An OpenTTD folder in your user account's home directory:
+** Windows XP: C:\Documents and Settings\<username>\My Documents\OpenTTD
+** Windows Vista: C:\Users\<username>\Documents\OpenTTD\data
+** Mac OSX: ~/Documents/OpenTTD
+** Linux:   ~/.openttd
+* The OpenTTD installation directory.
+
+'''4.''' Run OpenTTD. 
+
+'''5.''' In the main menu of the game, click the ''Game Options'' button. The ''Game Options'' dialog will appear.
+
+'''6.''' Select ''OpenSFX'' from the drop-down list below ''Base sound set'' if that's not selected already (bottom left of window). Close the window using the &times; in the upper left corner.
+
+Now that wasn't so hard, was it? Anyways, if you're having trouble getting OpenSFX to work, please file a detailed report on what you did, what error messages you got and where you got stuck in the OpenSFX release topic at TT-forums: http://www.tt-forums.net/viewtopic.php?f=29&t=44761&hilit=opensfx
+
+
+==Installing or Updating OpenSFX using the Online Content service==
+This method uses the [[en/Manual/Online content]] service (BaNaNaS) to download OpenSFX. In order to use this, you need a working OpenTTD and again at least '''OpenTTD version 0.8.0''' or a recent [[en/Archive/Community/Nightly build]].
+
+'''1.''' Start OpenTTD and on the main menu click the ''Check online content'' button. A new window will pop up.
+* If OpenTTD doesn't start, follow the [[#installing-opensfx-manually|manual installation procedure]].
+
+'''2.''' Find the OpenSFX entry from the list at the left. You can use the search box in the upper right corner of the window.
+
+'''3.''' Click the little square in front of the OpenSFX entry in order to mark it for download.
+
+'''4.''' Click the ''Download'' button in the bottom right corner. After download, close the open windows.
+
+'''5.''' In the main menu of the game, click the ''Game Options'' button. The ''Game Options'' dialog will appear.
+
+'''6.''' Select ''OpenSFX'' from the drop-down list below ''Base Sounds set'' if that's not selected already (bottom left of window). Close the window using the &times; in the upper left corner.
+* This is where you can switch base sound sets.
+
+
+==Technical and licensing details==
+
+Sounds should be uploaded as 44,100Hz, 16-bit mono WAV or FLAC files. There will be a new sound file format developed for OpenTTD, likely using .tar files in a manner similar to that of the new sounds. Until then, tools will be made available to enable work to go on using the existing sample.cat format.
+
+For ensuring that resulting sample.cat (or tar) file may be distributed freely with OpenTTD code, all sound files must have some kind of [https://freedomdefined.org/Definition free culture license]. Appropriate are the CC0, CC BY, and CC BY-SA licenses. [https://www.wikipedia.org/wiki/Public_domain Public domain] is also acceptable.
+
+If sourcing sound effects from free libraries online, please ensure they are in the Public Domain or under a free culture license.
+
+===See also===
+* [[en/Development/SoundIDs]]: List of sound IDs, useful if you want to make your own sound pack
+
+== External links ==
+* [https://github.com/OpenTTD/OpenSFX Tracker for sound replacement project]
+* [http://www.tt-forums.net/viewtopic.php?f=29&t=44761 Sound replacement project]
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