After a certain time playing music or sitting idle (usually a few hours ~ 6 ) squeezelite stops outputting, although still responds to commands

```
What steps will reproduce the problem?
1.I start squeezelite with the following command
squeezelite-armv6hf -o sysdefault:CARD=Audio -d all=debug -f var/log/squeezeslite.log

2. Either I play a long file (my test file is a 12 hour file of white noise) or
play nothing and all squeezelite to idle

It usually takes about 6 hours either way

What is the expected output? What do you see instead?

I expect music to play - squeezelite is responsive to commands, switching
songs, etc and appears on the remote app I am using to be playing but no sound
comes out.

What version of the product are you using? On what operating system?

I am using 1.3 binary (squeezelite-armv6hf)
on a Raspberry Pi model B, latest distro of raspbian ( 3.10.19+ #600 )
Using a fio 10 audio DAC

output of squeezelite-armv6hf -l
Output devices:
null - Discard all samples (playback) or generate zero samples (capture)
default:CARD=ALSA - bcm2835 ALSA, bcm2835 ALSA - Default Audio Device
sysdefault:CARD=ALSA - bcm2835 ALSA, bcm2835 ALSA - Default Audio Device
default:CARD=Audio - DigiHug USB Audio, USB Audio - Default Audio Device
sysdefault:CARD=Audio - DigiHug USB Audio, USB Audio - Default Audio Device
front:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - Front speakers
surround40:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - 4.0 Surround output to Front and Rear speakers
surround41:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - 4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - 5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - 5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Audio,DEV=0 - DigiHug USB Audio, USB Audio - IEC958 (S/PDIF) Digital Audio Output

Please provide any additional information below.
I have looked in the log file and when a file is playing it will stop when this
occurs in the logs

09:13:35.846384] process_strm:224 strm command t
[09:13:35.846520] sendSTAT:156 STAT: STMt
[09:13:36.848169] sendSTAT:156 STAT: STMt
[09:13:37.849789] sendSTAT:156 STAT: STMt
[09:13:38.857640] sendSTAT:156 STAT: STMt
[09:13:39.847039] process:430 strm
[09:13:39.847400] process_strm:224 strm command t
[09:13:39.847584] sendSTAT:156 STAT: STMt
[09:13:40.849877] sendSTAT:156 STAT: STMt
[09:13:41.852872] sendSTAT:156 STAT: STMt
[09:13:42.855206] sendSTAT:156 STAT: STMt
[09:13:43.452157] output_thread:864 snd_pcm_delay returns: -783594
[09:13:43.507352] output_thread:864 snd_pcm_delay returns: -370993
[09:13:43.508052] output_thread:864 snd_pcm_delay returns: -370278
[09:13:43.508426] output_thread:864 snd_pcm_delay returns: -369254
[09:13:43.508897] output_thread:864 snd_pcm_delay returns: -368230
[09:13:43.509281] output_thread:864 snd_pcm_delay returns: -367206
[09:13:43.509779] output_thread:864 snd_pcm_delay returns: -366182
[09:13:43.510208] output_thread:864 snd_pcm_delay returns: -365158
[09:13:43.510623] output_thread:864 snd_pcm_delay returns: -364134
[09:13:43.511044] output_thread:864 snd_pcm_delay returns: -363110
[09:13:43.511383] output_thread:864 snd_pcm_delay returns: -362086
[09:13:43.511838] output_thread:864 snd_pcm_delay returns: -361062
[09:13:43.512220] output_thread:864 snd_pcm_delay returns: -360038
[09:13:43.512547] output_thread:864 snd_pcm_delay returns: -359014
[09:13:43.513023] output_thread:864 snd_pcm_delay returns: -357990
[09:13:43.513369] output_thread:864 snd_pcm_delay returns: -356966
[09:13:43.513852] output_thread:864 snd_pcm_delay returns: -355942
[09:13:43.514202] output_thread:864 snd_pcm_delay returns: -354918
[09:13:43.514529] output_thread:864 snd_pcm_delay returns: -353894
[09:13:43.515022] output_thread:864 snd_pcm_delay returns: -352870
[09:13:43.515365] output_thread:864 snd_pcm_delay returns: -351846
[09:13:43.515779] output_thread:864 snd_pcm_delay returns: -350822
[09:13:43.516267] output_thread:864 snd_pcm_delay returns: -350106
[09:13:43.516688] output_thread:864 snd_pcm_delay returns: -349082
[09:13:43.517104] output_thread:864 snd_pcm_delay returns: -348058
[09:13:43.517444] output_thread:864 snd_pcm_delay returns: -347034
[09:13:43.517899] output_thread:864 snd_pcm_delay returns: -346010
[09:13:43.518281] output_thread:864 snd_pcm_delay returns: -344986
[09:13:43.518659] output_thread:864 snd_pcm_delay returns: -343962
[09:13:43.519084] output_thread:864 snd_pcm_delay returns: -342938
[09:13:43.519455] output_thread:864 snd_pcm_delay returns: -341914
[09:13:43.520005] output_thread:864 snd_pcm_delay returns: -340890
[09:13:43.520382] output_thread:864 snd_pcm_delay returns: -339866
[09:13:43.520896] output_thread:864 snd_pcm_delay returns: -338842
[09:13:43.521280] output_thread:864 snd_pcm_delay returns: -337818
09:13:43.521652] output_thread:864 snd_pcm_delay returns: -336794
[09:13:43.522075] output_thread:864 snd_pcm_delay returns: -335770
[09:13:43.522412] output_thread:864 snd_pcm_delay returns: -334746
[09:13:43.522871] output_thread:864 snd_pcm_delay returns: -333722
[09:13:43.524222] output_thread:864 snd_pcm_delay returns: -333007
[09:13:43.524739] output_thread:864 snd_pcm_delay returns: -331983
[09:13:43.525166] output_thread:864 snd_pcm_delay returns: -330959
[09:13:43.525500] output_thread:864 snd_pcm_delay returns: -329935
[09:13:43.525959] output_thread:864 snd_pcm_delay returns: -328911
[09:13:43.526309] output_thread:864 snd_pcm_delay returns: -327887
[09:13:43.526905] output_thread:864 snd_pcm_delay returns: -326863
[09:13:43.527256] output_thread:864 snd_pcm_delay returns: -325839
[09:13:43.527630] output_thread:864 snd_pcm_delay returns: -324815
[09:13:43.528045] output_thread:864 snd_pcm_delay returns: -323791
[09:13:43.528411] output_thread:864 snd_pcm_delay returns: -322767
[09:13:43.528840] output_thread:864 snd_pcm_delay returns: -321743
[09:13:43.529182] output_thread:864 snd_pcm_delay returns: -320719
[09:13:43.529532] output_thread:864 snd_pcm_delay returns: -319695
[09:13:43.530173] output_thread:864 snd_pcm_delay returns: -318979
[09:13:43.530524] output_thread:864 snd_pcm_delay returns: -317955
[09:13:43.530981] output_thread:864 snd_pcm_delay returns: -316931
[09:13:43.531340] output_thread:864 snd_pcm_delay returns: -315907
[09:13:43.531742] output_thread:864 snd_pcm_delay returns: -314883

and continues until
09:13:43.659412] output_thread:864 snd_pcm_delay returns: -6155
[09:13:43.659972] output_thread:864 snd_pcm_delay returns: -5131
[09:13:43.660349] output_thread:864 snd_pcm_delay returns: -4107
[09:13:43.660762] output_thread:864 snd_pcm_delay returns: -3083
[09:13:43.661169] output_thread:864 snd_pcm_delay returns: -2059
[09:13:43.661492] output_thread:864 snd_pcm_delay returns: -1035
[09:13:43.661932] output_thread:864 snd_pcm_delay returns: -11
[09:13:43.849549] process:430 strm
[09:13:43.850058] process_strm:224 strm command t
[09:13:43.850215] sendSTAT:156 STAT: STMt
[09:13:44.851682] sendSTAT:156 STAT: STMt
[09:13:45.853498] sendSTAT:156 STAT: STMt
[09:13:46.855279] sendSTAT:156 STAT: STMt
[09:13:47.847574] process:430 strm
[09:13:47.847833] process_strm:224 strm command t
[09:13:47.847968] sendSTAT:156 STAT: STMt
[09:13:48.850577] sendSTAT:156 STAT: STMt
[09:13:49.852177] sendSTAT:156 STAT: STMt
[09:13:50.855550] sendSTAT:156 STAT: STMt
[09:13:51.846851] process:430 strm
[09:13:51.847113] process_strm:224 strm command t
[09:13:51.847250] sendSTAT:156 STAT: STMt
[09:13:52.848885] sendSTAT:156 STAT: STMt
09:13:53.849820] sendSTAT:156 STAT: STMt
[09:13:54.851560] sendSTAT:156 STAT: STMt
[09:13:55.846584] process:430 strm
[09:13:55.846897] process_strm:224 strm command t
[09:13:55.848235] sendSTAT:156 STAT: STMt
[09:13:56.849763] sendSTAT:156 STAT: STMt
[09:13:57.852457] sendSTAT:156 STAT: STMt
[09:13:58.854057] sendSTAT:156 STAT: STMt
[09:13:59.846578] process:430 strm
[09:13:59.846834] process_strm:224 strm command t
[09:13:59.846972] sendSTAT:156 STAT: STMt
[09:14:00.848605] sendSTAT:156 STAT: STMt
[09:14:01.522985] output_thread:864 snd_pcm_delay returns: -784028
[09:14:01.578604] output_thread:864 snd_pcm_delay returns: -366903
[09:14:01.579129] output_thread:864 snd_pcm_delay returns: -365879
[09:14:01.579514] output_thread:864 snd_pcm_delay returns: -364855
[09:14:01.580125] output_thread:864 snd_pcm_delay returns: -364139
[09:14:01.580524] output_thread:864 snd_pcm_delay returns: -363115
[09:14:01.580955] output_thread:864 snd_pcm_delay returns: -362091
[09:14:01.581280] output_thread:864 snd_pcm_delay returns: -361067
[09:14:01.581716] output_thread:864 snd_pcm_delay returns: -360043
[09:14:01.582084] output_thread:864 snd_pcm_delay returns: -359019
[09:14:01.582443] output_thread:864 snd_pcm_delay returns: -357995

Here is an example when it is just sitting idly
18:48:12.351785] process_strm:224 strm command t
[18:48:12.351983] sendSTAT:156 STAT: STMt
[18:48:17.351381] process:430 strm
[18:48:17.351776] process_strm:224 strm command t
[18:48:17.351929] sendSTAT:156 STAT: STMt
[18:48:22.352638] process:430 strm
[18:48:22.352966] process_strm:224 strm command t
[18:48:22.353197] sendSTAT:156 STAT: STMt
[18:48:27.351169] process:430 strm
[18:48:27.351506] process_strm:224 strm command t
[18:48:27.351736] sendSTAT:156 STAT: STMt
[18:48:32.351250] process:430 strm
[18:48:32.351536] process_strm:224 strm command t
[18:48:32.351683] sendSTAT:156 STAT: STMt
[18:48:35.920878] output_thread:864 snd_pcm_delay returns: -783594
[18:48:35.922182] output_thread:864 snd_pcm_delay returns: -782570
[18:48:35.922725] output_thread:864 snd_pcm_delay returns: -781546
[18:48:35.923102] output_thread:864 snd_pcm_delay returns: -780522
[18:48:35.923624] output_thread:864 snd_pcm_delay returns: -779498
[18:48:35.923999] output_thread:864 snd_pcm_delay returns: -778474
[18:48:35.924390] output_thread:864 snd_pcm_delay returns: -777450

```

Original issue reported on code.google.com by `sakap...@gmail.com` on 2 Dec 2013 at 9:12