audio

描述(Description)

描述你遇到了什么问题

用户点播视频，PC端使用WebRtc播放，当用户关闭视频后，云服务器利用回调函数，主动踢掉用户播放的视频流，该过程进行十几次后，云服务器的CPU一直处于98%的状态，即使没有任何推流操作，cpu也无法得到释放。

1. SRS版本(Version): v 4.0.198

重现(Replay)

重现Bug的步骤(How to replay bug?)

1. 本地推流到SRS云服务器
2. PC端成功播放视频后，主动关闭视频，云服务器使用回调函数，进行主动踢流
3. 重复十几次后，CPU处于98%的状态

期望行为(Expect)

描述你期望发生的事情(Please describe your expectation)

频繁推流、拉流、

Recent discussions show that it is still possible for the load_synthdefs function to raise an un-handled error if it is given the path to a SynthDef file instead of a directory of SynthDefs.

We should fix this by raising a more useful error that describes the problem in a clearer way.
I suggest adding something like the following line:

raise "The load_synthdefs function expects an 

Summa

Is your feature request related to a problem? Please describe.
Some new users see the "Warning" about saving projects as an error, and get frustrated and confused that they can't save a project without getting this "error".

Describe the solution you'd like
The message about saving projects was added because many users we

Guidelines

• I have read the guidelines.

Version/Commit hash

trunk

Describe the bug.

Look at the screenshot in #618:

I’ve highlighted the areas that use a font other than SF UI.

Expected behavior

The whole interface

Context

Since text-to-speech is now disabled by default, it's not intuitive for the user to re-enable it. Ordinarily, I would click the configure-mumble/settings icon in mumble client and then fiddle around with the text-to-speech settings for awhile trying to get it to work. It took me forever to realize, I had to enable it by going to the mumble ribbon, selecting configure and then checki

Motivation

The .postf is a neat shortcut for posting a formatted string.

But personally I see my self doing things like "% is not implemented yet".format("something").warn and the equivalent with .error all the time.

Description of Proposed Feature

Add the following methods to String:

// Equivalent to .postf
St