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hi my minecraft keeps crashing can someone help here is the report

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.
Time: 12/3/13 10:52 AM
Description: Unexpected error
java.lang.UnsatisfiedLinkError: org.lwjgl.openal.AL10.nalGetSourcei(II)I
at org.lwjgl.openal.AL10.nalGetSourcei(Native Method)
at org.lwjgl.openal.AL10.alGetSourcei(AL10.java:853)
at paulscode.sound.libraries.ChannelLWJGLOpenAL.playing(ChannelLWJGLOpenAL.java:651)
at paulscode.sound.Source.playing(Source.java:1213)
at bta.playing(SourceFile:423)
at bsw.a(SourceFile:227)
at btc.c(SourceFile:216)
at bst.a(SourceFile:33)
at azd.o(SourceFile:1538)
at azd.ad(SourceFile:753)
at azd.e(SourceFile:704)
at net.minecraft.client.main.Main.main(SourceFile:103)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at org.lwjgl.openal.AL10.nalGetSourcei(Native Method)
at org.lwjgl.openal.AL10.alGetSourcei(AL10.java:853)
at paulscode.sound.libraries.ChannelLWJGLOpenAL.playing(ChannelLWJGLOpenAL.java:651)
at paulscode.sound.Source.playing(Source.java:1213)
at bta.playing(SourceFile:423)
at bsw.a(SourceFile:227)
at btc.c(SourceFile:216)
at bst.a(SourceFile:33)
-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [bje['cpl_diamond'/218, l='MpServer', x=-302.56, y=64.62, z=63.68]]
Chunk stats: MultiplayerChunkCache: 270, 270
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-264,64,125), Chunk: (at 8,4,13 in -17,7; contains blocks -272,0,112 to -257,255,127), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 49006 game time, 49006 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: true), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 82 total; [uq['Bat'/137, l='MpServer', x=-304.75, y=49.10, z=51.25], wz['Spider'/136, l='MpServer', x=-314.53, y=68.00, z=2.09], xc['Zombie'/10163, l='MpServer', x=-348.50, y=18.00, z=37.50], xc['Zombie'/154, l='MpServer', x=-271.50, y=56.00, z=79.50], uq['Bat'/155, l='MpServer', x=-268.13, y=54.73, z=85.97], uq['Bat'/156, l='MpServer', x=-268.03, y=56.82, z=84.69], uq['Bat'/157, l='MpServer', x=-266.53, y=56.29, z=94.00], uq['Bat'/158, l='MpServer', x=-271.00, y=54.10, z=82.03], uq['Bat'/159, l='MpServer', x=-262.94, y=55.79, z=95.59], wl['Creeper'/145, l='MpServer', x=-286.50, y=66.00, z=16.50], wz['Spider'/146, l='MpServer', x=-277.91, y=56.00, z=77.50], xc['Zombie'/5478, l='MpServer', x=-348.50, y=22.00, z=30.50], wl['Creeper'/5717, l='MpServer', x=-227.50, y=46.00, z=30.50], uq['Bat'/170, l='MpServer', x=-247.63, y=62.10, z=6.44], wz['Spider'/175, l='MpServer', x=-237.44, y=37.00, z=47.72], wl['Creeper'/174, l='MpServer', x=-246.06, y=68.00, z=29.47], wx['Skeleton'/162, l='MpServer', x=-262.94, y=74.00, z=102.44], uq['Bat'/161, l='MpServer', x=-264.44, y=54.79, z=86.38], wl['Creeper'/160, l='MpServer', x=-274.00, y=58.00, z=93.56], va['Pig'/46, l='MpServer', x=-383.47, y=72.00, z=36.25], wx['Skeleton'/44, l='MpServer', x=-382.50, y=64.00, z=27.13], uq['Bat'/55, l='MpServer', x=-354.47, y=31.92, z=27.03], uq['Bat'/54, l='MpServer', x=-332.16, y=35.82, z=38.88], wz['Spider'/53, l='MpServer', x=-383.13, y=63.00, z=3.88], wx['Skeleton'/178, l='MpServer', x=-238.38, y=47.00, z=77.94], wl['Creeper'/59, l='MpServer', x=-381.00, y=26.00, z=68.41], wz['Spider'/179, l='MpServer', x=-238.28, y=36.96, z=70.50], wl['Creeper'/58, l='MpServer', x=-380.00, y=24.00, z=69.44], wl['Creeper'/57, l='MpServer', x=-371.50, y=17.00, z=48.50], wl['Creeper'/177, l='MpServer', x=-227.50, y=48.00, z=60.16], wl['Creeper'/56, l='MpServer', x=-376.50, y=17.00, z=48.50], va['Pig'/63, l='MpServer', x=-382.50, y=95.00, z=96.50], wz['Spider'/62, l='MpServer', x=-378.78, y=26.00, z=106.25], vb['Sheep'/180, l='MpServer', x=-245.31, y=69.00, z=75.88], wl['Creeper'/61, l='MpServer', x=-374.50, y=38.00, z=70.50], us['Chicken'/181, l='MpServer', x=-227.38, y=67.00, z=83.44], va['Pig'/60, l='MpServer', x=-383.81, y=75.00, z=49.50], wl['Creeper'/64, l='MpServer', x=-373.50, y=38.00, z=118.50], wl['Creeper'/65, l='MpServer', x=-373.50, y=38.00, z=125.50], wy['Slime'/76, l='MpServer', x=-362.19, y=13.24, z=-4.75], uq['Bat'/77, l='MpServer', x=-335.56, y=26.42, z=36.50], va['Pig'/78, l='MpServer', x=-354.44, y=79.00, z=41.69], va['Pig'/79, l='MpServer', x=-360.50, y=74.00, z=34.31], wy['Slime'/75, l='MpServer', x=-364.69, y=14.00, z=-4.66], wx['Skeleton'/85, l='MpServer', x=-354.50, y=25.00, z=138.16], wx['Skeleton'/84, l='MpServer', x=-355.50, y=72.00, z=117.50], wx['Skeleton'/81, l='MpServer', x=-359.09, y=78.00, z=49.59], wx['Skeleton'/80, l='MpServer', x=-357.09, y=75.00, z=33.44], wl['Creeper'/83, l='MpServer', x=-355.00, y=86.00, z=96.44], va['Pig'/82, l='MpServer', x=-353.69, y=85.00, z=111.50], wl['Creeper'/93, l='MpServer', x=-345.06, y=73.00, z=59.56], va['Pig'/92, l='MpServer', x=-344.50, y=81.00, z=54.97], va['Pig'/95, l='MpServer', x=-346.69, y=83.00, z=106.50], va['Pig'/94, l='MpServer', x=-343.22, y=81.00, z=109.94], vb['Sheep'/89, l='MpServer', x=-340.66, y=70.00, z=-19.47], xc['Zombie'/91, l='MpServer', x=-335.81, y=32.00, z=42.50], uq['Bat'/90, l='MpServer', x=-337.25, y=20.23, z=37.06], wx['Skeleton'/102, l='MpServer', x=-338.59, y=19.00, z=137.28], wx['Skeleton'/103, l='MpServer', x=-347.50, y=24.00, z=128.50], wx['Skeleton'/100, l='MpServer', x=-346.38, y=24.00, z=135.69], wx['Skeleton'/101, l='MpServer', x=-347.34, y=24.00, z=136.66], xc['Zombie'/98, l='MpServer', x=-353.56, y=40.00, z=130.94], wl['Creeper'/99, l='MpServer', x=-347.50, y=25.00, z=129.50], uq['Bat'/96, l='MpServer', x=-339.84, y=23.57, z=125.97], xc['Zombie'/97, l='MpServer', x=-349.69, y=37.00, z=117.63], xc['Zombie'/107, l='MpServer', x=-347.13, y=35.00, z=135.31], bje['cpl_diamond'/218, l='MpServer', x=-302.56, y=64.62, z=63.68], wx['Skeleton'/104, l='MpServer', x=-339.94, y=22.00, z=131.28], wx['Skeleton'/105, l='MpServer', x=-344.31, y=24.00, z=134.72], wl['Creeper'/119, l='MpServer', x=-321.78, y=50.00, z=37.50], wl['Creeper'/118, l='MpServer', x=-328.31, y=58.00, z=37.00], wx['Skeleton'/117, l='MpServer', x=-331.31, y=59.00, z=33.31], wx['Skeleton'/116, l='MpServer', x=-330.38, y=59.00, z=33.94], xc['Zombie'/115, l='MpServer', x=-333.50, y=20.00, z=37.50], uq['Bat'/127, l='MpServer', x=-326.41, y=25.05, z=136.13], uq['Bat'/126, l='MpServer', x=-316.44, y=29.45, z=136.97], va['Pig'/125, l='MpServer', x=-334.03, y=78.00, z=99.97], xc['Zombie'/124, l='MpServer', x=-321.13, y=70.00, z=54.38], uq['Bat'/123, l='MpServer', x=-325.78, y=58.92, z=53.81], wl['Creeper'/122, l='MpServer', x=-322.28, y=55.00, z=52.45], wx['Skeleton'/121, l='MpServer', x=-335.66, y=58.00, z=61.06], xc['Zombie'/120, l='MpServer', x=-333.50, y=59.00, z=35.50]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at biz.a(SourceFile:284)
at azd.b(SourceFile:1951)
at azd.e(SourceFile:718)
at net.minecraft.client.main.Main.main(SourceFile:103)
-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 65305576 bytes (62 MB) / 193732608 bytes (184 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 6855 (383880 bytes; 0 MB) allocated, 1071 (59976 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: Timmy
LWJGL: 2.9.0
OpenGL: Intel(R) HD Graphics GL version 3.1.0 - Build 9.17.10.2932, Intel
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 2121 (118776 bytes; 0 MB) allocated, 167 (9352 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

Try reinstalling java.

thanks it's stoped crashing now