Mod Version: 1.10.2.3.4.2.0
Forge Version: 2297
Link to crash log (if applicable): included
Description: I experience erratic sound crashes, which may be one of two things - something with DS or a resource pack I'm using.
This is more of a heads up for you just in case there is a bug, so apologies if this is nothing to do with your mod.

[10:07:35] [Client thread/INFO]: Muting sounds
[10:07:50] [Client thread/INFO]: Unmuting sounds
[10:11:05] [Client thread/INFO]: Default sorting.
[10:11:05] [Client thread/INFO]: Sorting done in 444140ns
[10:12:02] [Server thread/INFO]: [CHAT] You can only sleep at night
[10:12:04] [Server thread/INFO]: [CHAT] You can only sleep at night
[10:13:11] [Server thread/INFO]: nexusdog has just earned the achievement [Uncraft a diamond hoe!]
[10:13:11] [Client thread/INFO]: [CHAT] nexusdog has just earned the achievement [Uncraft a diamond hoe!]
[10:14:27] [Client thread/INFO]: Automatic stack replacement.
[10:22:21] [Client thread/INFO]: Default sorting.
[10:22:21] [Client thread/INFO]: Sorting done in 12394181ns
[10:23:37] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2135ms behind, skipping 42 tick(s)
[10:24:01] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 7106ms behind, skipping 142 tick(s)
[10:24:16] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 5114ms behind, skipping 102 tick(s)
[10:24:38] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2053ms behind, skipping 41 tick(s)
[10:25:02] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 6243ms behind, skipping 124 tick(s)
[10:25:13] [Thread-26/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: java.lang.NullPointerException
[10:25:13] [Thread-26/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at paulscode.sound.Source.stream(Source.java:953)
[10:25:13] [Thread-26/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at paulscode.sound.StreamThread.run(StreamThread.java:129)
[10:25:18] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4658ms behind, skipping 93 tick(s)
[10:25:21] [Client thread/INFO]: [CHAT] It looks like the sound system has crashed.
[10:25:21] [Client thread/INFO]: [CHAT] Attempting to restart...
[10:25:21] [Client thread/INFO]: [CHAT] 60 fps (2 chunk updates) T: 60
[10:25:21] [Client thread/WARN]: It looks like the sound system has crashed.
[10:25:21] [Client thread/WARN]: Attempting to restart...
[10:25:21] [Client thread/WARN]: 60 fps (2 chunk updates) T: 60
[10:25:21] [Client thread/WARN]: Missing sound for event: dsurround:MISSING
[10:25:21] [Client thread/INFO]: SoundSystem shutting down...
[10:25:26] [Client thread/ERROR]: Error in class 'LibraryLWJGLOpenAL'
[10:25:26] [Client thread/ERROR]: Stream thread did not die!
[10:25:26] [Client thread/INFO]: Ignoring errors... continuing clean-up.
[10:25:27] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com
[10:25:27] [Sound Library Loader/INFO]: Starting up SoundSystem...
[10:25:27] [Thread-41/INFO]: Initializing LWJGL OpenAL
[10:25:27] [Thread-41/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[10:25:27] [Thread-41/INFO]: OpenAL initialized.
[10:25:27] [Sound Library Loader/INFO]: Sound engine started
[10:25:27] [Thread-41/INFO]: [com.tmtravlr.soundfilters.filters.BaseFilter:checkError:109]: [Sound Filters] Caught AL error in 'loadSourceFilter attempt 1'! Error is 40961
[10:25:27] [Thread-41/INFO]: [com.tmtravlr.soundfilters.filters.BaseFilter:checkError:109]: [Sound Filters] Caught AL error in 'load3SourceFilters attempt 1'! Error is 40963
[10:25:36] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 5240ms behind, skipping 104 tick(s)
[10:25:53] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 5813ms behind, skipping 116 tick(s)
[10:26:06] [Server thread/INFO]: Saving and pausing game...
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/Overworld
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/Nether
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/The End
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/Deep Dark
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/ExtraUtils2_Quarry_Dim
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/The Dark Realm
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/Omothol
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/The Dreadlands
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/The Abyssal Wasteland
[10:26:06] [Server thread/INFO]: Saving chunks for level '#25_REAL'/Overworld
[10:26:06] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2826ms behind, skipping 56 tick(s)
[10:26:07] [Client thread/INFO]: Muting sounds

Yes. The stream handler in PaulsCode died. Dynamic Surroundings reinitialized the sound system automatically:

10:25:13] [Thread-26/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: java.lang.NullPointerException
[10:25:13] [Thread-26/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at paulscode.sound.Source.stream(Source.java:953)
[10:25:13] [Thread-26/INFO]: [java.lang.ThreadGroup:uncaughtException:1052]: at paulscode.sound.StreamThread.run(StreamThread.java:129)
[10:25:18] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4658ms behind, skipping 93 tick(s)
[10:25:21] [Client thread/INFO]: [CHAT] It looks like the sound system has crashed.
[10:25:21] [Client thread/INFO]: [CHAT] Attempting to restart...
[10:25:21] [Client thread/INFO]: [CHAT] 60 fps (2 chunk updates) T: 60
[10:25:21] [Client thread/WARN]: It looks like the sound system has crashed.
[10:25:21] [Client thread/WARN]: Attempting to restart...

If this is causing a problem you can disable in the config options.

EDIT: I have seen this type of crash since 1.7.10. I noticed that it usually occurs around some laggy event, like teleporting to bases. Given the trace above it seems like the server is struggling to do something. This may be the locus of what eventually triggers the tread crash and restart.

@Nexusdog Any update on the problem? Did disabling auto-recovery help?

@Nexusdog Going to close out this issue for now. If you are still having issues let me know and we can continue.