Streaming a FLAC across the network, playback hits 50% (foo_playcount updating the play_counter tag), the 'Updating files' dialog pops up and foobar freezes, opening two crashlogs. The file's tags were successively changed and no apparent problems with the network connection. Can't seem to reproduce, but hope that might help.

Here's the first log:
CODE
Illegal operation:
Code: C0000005h, flags: 00000000h, address: 00465DD2h
Access violation, operation: read, address: 00000000h
Call path:
entry=>app_mainloop=>on_playback_time=>threaded_process::run_modal
This is the first crash logged by this instance.
Code bytes (00465DD2h):
00465D92h: 89 5E 04 FF D5 80 7E 08 00 74 27 80 7E 14 00 8D
00465DA2h: 46 0C 75 1E B1 01 50 88 48 08 88 48 04 89 18 FF
00465DB2h: 15 FC 83 4A 00 EB 0B 6A 08 53 FF 15 04 83 4A 00
00465DC2h: 8B F8 85 FF 74 17 8B 4C 24 1C 8B 07 8B 54 24 18
00465DD2h: 8B 00 56 51 52 8B CF FF D0 8B F0 EB 02 33 F6 83
00465DE2h: 7C 24 18 02 75 0B 85 FF 74 07 6A 00 6A 08 53 FF
00465DF2h: D5 5F 8B C6 5E 5D 5B C2 10 00 CC CC CC CC 83 78
00465E02h: 04 00 74 06 83 C8 FF C2 08 00 0F B7 4C 24 04 8B
Stack (0012F928h):
0012F908h: 00D1DB9C 7C9C93A0 77F643DD 7C9C93A0
0012F918h: 00000004 00000000 00D1D0A8 00000000
0012F928h: 0012F99C 00465D70 0012F960 00000000
0012F938h: 77D48734 000905A6 00000113 000010E1
0012F948h: 00000000 00465D70 DCBAABCD 00000000
0012F958h: 0012F99C 00465D70 0012F9CC 77D5418D
0012F968h: 00465D70 000905A6 00000113 000010E1
0012F978h: 00000000 00000113 000905A6 00760F40
0012F988h: 00000014 00000001 00000000 00000000
0012F998h: 00000010 00000000 77D4EAAD 00000000
0012F9A8h: 00000001 00000000 00000000 0012F97C
0012F9B8h: 0012F54C 0012FAB4 77D70467 77D541B0
0012F9C8h: 00000000 0012FA14 77D53FD9 00000000
0012F9D8h: 00465D70 000905A6 00000113 000010E1
0012F9E8h: 00000000 00760F54 0012FA1C 0012FA98
0012F9F8h: 77D541E2 00000000 00000003 77D6E185
0012FA08h: 77D484FC 77D485A4 000905A6 0012FA30
0012FA18h: 77D54204 00000000 00000113 000010E1
0012FA28h: 00000000 00000000 0012FA5C 77D48734
0012FA38h: 000905A6 00000113 000010E1 00000000
Registers:
EAX: 00000000, EBX: 000905A6, ECX: 000010E1, EDX: 00000113
ESI: 00000000, EDI: 0012F694, EBP: 77D4D62B, ESP: 0012F928
Crash location: "foobar2000", loaded at 00400000h - 004E6000h

Loaded modules:
foobar2000 loaded at 00400000h - 004E6000h
ntdll loaded at 7C900000h - 7C9B0000h
kernel32 loaded at 7C800000h - 7C8F4000h
COMCTL32 loaded at 773D0000h - 774D2000h
msvcrt loaded at 77C10000h - 77C68000h
ADVAPI32 loaded at 77DD0000h - 77E6B000h
RPCRT4 loaded at 77E70000h - 77F01000h
GDI32 loaded at 77F10000h - 77F57000h
USER32 loaded at 77D40000h - 77DD0000h
SHLWAPI loaded at 77F60000h - 77FD6000h
SHELL32 loaded at 7C9C0000h - 7D1D5000h
ole32 loaded at 774E0000h - 7761D000h
shared loaded at 10000000h - 1002A000h
comdlg32 loaded at 763B0000h - 763F9000h
IMM32 loaded at 76390000h - 763AD000h
LPK loaded at 629C0000h - 629C9000h
USP10 loaded at 74D90000h - 74DFB000h
uxtheme loaded at 5AD70000h - 5ADA8000h
sizer loaded at 003D0000h - 003D8000h
msctfime loaded at 755C0000h - 755EE000h
foo_abx loaded at 00A20000h - 00A54000h
foo_audioscrobbler loaded at 00A70000h - 00AA8000h
WS2_32 loaded at 71AB0000h - 71AC7000h
WS2HELP loaded at 71AA0000h - 71AA8000h
foo_autoplaylist loaded at 00AD0000h - 00B02000h
foo_benchmark loaded at 00B30000h - 00B56000h
foo_bitcompare loaded at 00B80000h - 00BA6000h
foo_browser loaded at 00BD0000h - 00C0A000h
foo_cdda loaded at 00C30000h - 00C69000h
foo_converter loaded at 00C90000h - 00CF4000h
foo_dsp_bs2b loaded at 00D20000h - 00D3E000h
foo_dsp_continuator loaded at 00D60000h - 00D92000h
OLEAUT32 loaded at 77120000h - 771AC000h
foo_dsp_delta loaded at 00DC0000h - 00DDE000h
foo_dsp_dolbyhp loaded at 00E00000h - 00E21000h
VERSION loaded at 77C00000h - 77C08000h
foo_dsp_std loaded at 00E40000h - 00E82000h
foo_dumb loaded at 00EB0000h - 00F0F000h
foo_freedb2 loaded at 00F30000h - 00F70000h
foo_gep loaded at 00F90000h - 01028000h
MSIMG32 loaded at 76380000h - 76385000h
foo_infobox loaded at 01050000h - 0108F000h
foo_input_monkey loaded at 010B0000h - 010F3000h
foo_input_shorten loaded at 01120000h - 0114E000h
foo_input_std loaded at 01170000h - 0126B000h
foo_masstag loaded at 01290000h - 012E0000h
foo_midi loaded at 01300000h - 013A8000h
foo_playcount loaded at 013D0000h - 013F8000h
foo_random loaded at 01420000h - 0145F000h
foo_rgscan loaded at 01480000h - 014C6000h
foo_sic loaded at 014F0000h - 01528000h
foo_tradersfriend loaded at 01550000h - 0158D000h
foo_uie_albumart loaded at 015B0000h - 015E2000h
gdiplus loaded at 4EC50000h - 4EDF3000h
foo_uie_albumlist loaded at 01620000h - 0165F000h
foo_uie_lyrics loaded at 01680000h - 016DE000h
WININET loaded at 771B0000h - 77256000h
CRYPT32 loaded at 77A80000h - 77B14000h
MSASN1 loaded at 77B20000h - 77B32000h
WINMM loaded at 76B40000h - 76B6D000h
foo_uie_quicksearch loaded at 017B0000h - 017F7000h
foo_uie_trackinfo loaded at 01800000h - 0182E000h
foo_ui_columns loaded at 01850000h - 018EB000h
foo_ui_std loaded at 01910000h - 01967000h
foo_unpack loaded at 01990000h - 019BE000h
foo_vis_channelusage loaded at 019E0000h - 01A03000h
dciman32 loaded at 73BC0000h - 73BC6000h
dolbyhph loaded at 0A550000h - 0A64C000h
mswsock loaded at 71A50000h - 71A8F000h
DNSAPI loaded at 76F20000h - 76F47000h
rasadhlp loaded at 76FC0000h - 76FC6000h
hnetcfg loaded at 662B0000h - 66308000h
wshtcpip loaded at 71A90000h - 71A98000h
xpsp2res loaded at 20000000h - 202C5000h
DSOUND loaded at 73F10000h - 73F6C000h
WINTRUST loaded at 76C30000h - 76C5E000h
IMAGEHLP loaded at 76C90000h - 76CB8000h
wdmaud loaded at 72D20000h - 72D29000h
msacm32 loaded at 72D10000h - 72D18000h
MSACM32 loaded at 77BE0000h - 77BF5000h
midimap loaded at 77BD0000h - 77BD7000h
KsUser loaded at 73EE0000h - 73EE4000h
DBGHELP loaded at 59A60000h - 59B01000h
netapi32 loaded at 5B860000h - 5B8B4000h
SETUPAPI loaded at 77920000h - 77A13000h

Stack dump analysis:
Address: 00465D70h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 77D48734h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetDC" (+0000006Dh)
Address: 00465D70h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 00465D70h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 77D5418Dh, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "PrivateExtractIconExW" (+000002B2h)
Address: 00465D70h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 77D4EAADh, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "EnableMenuItem" (+0000007Eh)
Address: 77D70467h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DeregisterShellHookWindow" (+000001CFh)
Address: 77D541B0h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "PrivateExtractIconExW" (+000002D5h)
Address: 77D53FD9h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "PrivateExtractIconExW" (+000000FEh)
Address: 00465D70h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 77D541E2h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefDlgProcW" (+00000000h)
Address: 77D6E185h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "User32InitializeImmEntryTable" (+00000E18h)
Address: 77D484FCh, location: "USER32", loaded at 77D40000h - 77DD0000h
Address: 77D485A4h, location: "USER32", loaded at 77D40000h - 77DD0000h
Address: 77D54204h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefDlgProcW" (+00000022h)
Address: 77D48734h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetDC" (+0000006Dh)
Address: 77D541E2h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefDlgProcW" (+00000000h)
Address: 77D541E2h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefDlgProcW" (+00000000h)
Address: 77D48816h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetDC" (+0000014Fh)
Address: 77D541E2h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefDlgProcW" (+00000000h)
Address: 77D70467h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DeregisterShellHookWindow" (+000001CFh)
Address: 77D70467h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DeregisterShellHookWindow" (+000001CFh)
Address: 77D48830h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetDC" (+00000169h)
Address: 77D489CDh, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetWindowLongW" (+00000127h)
Address: 77D541E2h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DefDlgProcW" (+00000000h)
Address: 004D1800h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B88ECh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 77D70467h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DeregisterShellHookWindow" (+000001CFh)
Address: 77D489F0h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "GetWindowLongW" (+0000014Ah)
Address: 77D48A10h, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DispatchMessageW" (+0000000Fh)
Address: 00427DCAh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 77D4DAEAh, location: "USER32", loaded at 77D40000h - 77DD0000h
Symbol: "DestroyWindow" (+00000000h)
Address: 004287F1h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B0380h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B0380h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 00400000h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B287Ch, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 7C9105D4h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlAllocateHeap" (+00000000h)
Address: 7C910732h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlAllocateHeap" (+0000015Eh)
Address: 7C90EE18h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "strchr" (+00000117h)
Address: 7C911538h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "wcsncpy" (+00000AA9h)
Address: 7C911596h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "wcsncpy" (+00000B07h)
Address: 7C9106EBh, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlAllocateHeap" (+00000117h)
Address: 004A892Ch, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 7C917CB7h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlReAllocateHeap" (+000002BAh)
Address: 7C90EE18h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "strchr" (+00000117h)
Address: 7C90EE18h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "strchr" (+00000117h)
Address: 7C90EE18h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "strchr" (+00000117h)
Address: 7C9106F0h, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlAllocateHeap" (+0000011Ch)
Address: 7C9106EBh, location: "ntdll", loaded at 7C900000h - 7C9B0000h
Symbol: "RtlAllocateHeap" (+00000117h)
Address: 0048842Eh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B90FCh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 00403535h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004075EBh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004075F8h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0048CE6Bh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0048B590h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B4080h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 10002D67h, location: "shared", loaded at 10000000h - 1002A000h
Symbol: "uPrintCrashInfo_SetDumpPath" (+000000B7h)
Address: 004B4080h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004A30F3h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B4080h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004289C7h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 00400000h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004D37B0h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0048B299h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004866B7h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004866B1h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004A893Ch, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004A7000h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004D6C48h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0048B590h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004A3208h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0048AA74h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 00400000h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0048B590h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 7C816D4Fh, location: "kernel32", loaded at 7C800000h - 7C8F4000h
Symbol: "RegisterWaitForInputIdle" (+00000049h)
Address: 7C8399F3h, location: "kernel32", loaded at 7C800000h - 7C8F4000h
Symbol: "FindAtomW" (+00000094h)
Address: 7C816D58h, location: "kernel32", loaded at 7C800000h - 7C8F4000h
Symbol: "RegisterWaitForInputIdle" (+00000052h)
Address: 0048AADDh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004E0049h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004B0063h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 003D006Eh, location: "sizer", loaded at 003D0000h - 003D8000h
Address: 003D0065h, location: "sizer", loaded at 003D0000h - 003D8000h
Address: 003D006Eh, location: "sizer", loaded at 003D0000h - 003D8000h
Address: 00410072h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 003D0065h, location: "sizer", loaded at 003D0000h - 003D8000h
Address: 004E0049h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 004D002Eh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0044002Eh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0044002Eh, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 00410072h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 003D0065h, location: "sizer", loaded at 003D0000h - 003D8000h
Address: 004E0049h, location: "foobar2000", loaded at 00400000h - 004E6000h
Address: 0044002Eh, location: "foobar2000", loaded at 00400000h - 004E6000h

Version info:
foobar2000 v0.9.2
UNICODE

Additional info:
RAR reader 1.1 (foo_unpack)
Standard DSP array 1.0 (foo_dsp_std)
Decoding speed test 1.0 (foo_benchmark)
Audioscrobbler 1.3.3 (foo_audioscrobbler)
Masstagger 1.5 (foo_masstag)
Play Count 1.9.2 (foo_playcount)
Default User Interface 0.9acc (foo_ui_std)
Quick Search Toolbar 2.7f (foo_uie_quicksearch)
Album list panel 0.2.1 beta 4 (foo_uie_albumlist)
freedb tagger v0.5.1 (foo_freedb2)
Columns UI 0.1.3 beta 1v5 (foo_ui_columns)
DUMB module decoder 0.9.7 (foo_dumb)
Album Art Panel 0.2.0 (foo_uie_albumart)
foosic music database 1.0 beta 6 (foo_sic)
Standard input array 1.0 (foo_input_std)
ReplayGain Scanner 2.0.1 (foo_rgscan)
CD Audio decoder 2.1 (foo_cdda)
Randomized playlist entry 1.2.3 (foo_random)
FLAC decoder 1.1.0 (foo_input_std)
bs2b 2.0.0b2 (foo_dsp_bs2b)
MIDI synthesizer host 1.6 (foo_midi)
Music Browser 1.2.0b [Jun 14 2006 - 08:28:57] (foo_browser)
Lyric Show Panels 0.3.0.0 (foo_uie_lyrics)
Monkey's Audio decoder 2.0 (foo_input_monkey)
ZIP/GZIP reader 1.0 (foo_unpack)
Live show tagger 0.6.1 (foo_tradersfriend)
Converter 1.0.1 (foo_converter)
ABX comparator 1.3 (foo_abx)
Continuator 0.4.0 (foo_dsp_continuator)
LPCM <--> delta-PCM converter 0.1.1 (foo_dsp_delta)
Shorten decoder 0.4.2a (foo_input_shorten)
Track info panel 0.8 (foo_uie_trackinfo)
Dolby Headphone Wrapper 1.1 (foo_dsp_dolbyhp)
Game Emu Player 1.3 (foo_gep)
Binary comparator 1.0 (foo_bitcompare)
Channel Usage Visualisation 1.0 (foo_vis_channelusage)
Special file info box 2.0.2 (foo_infobox)