Trouble With Improperly Muxed MKV

[Startropic1]

I'm trying to convert some mkv videos to mp4; I already have the video tracks converted, but my first time through I inadvertently muxed the wronng language audio tracks. So all I'm trying to do with these MKVs is extract the audio tracks I was supposed to grab the first time. Only problem is two of the MKV files were muxed incorrectly or something. First I just tried to extract the audio tracks as usual with mkvtoolnix, but for some odd reason the audio file (.ogg btw) came out to be 200MB, the same size as the original MKV file with all the tracks, whereas all the other MKVs that I processed without a hitch only had audio tracks of 20MB. I tried playing the .ogg file in VLC and it wouldn't play, merely lock up VLC. (All the 20MB .ogg files played fine btw.) So upon further investigation, this is what the trees of the two MKV files look like, obviously whoever muxed these did something completely wrong:

(MKVInfo) |+ Doc type: matroska
(MKVInfo) |+ Doc type version: 1
(MKVInfo) |+ Doc type read version: 1
(MKVInfo) + Segment, size 258443708
(MKVInfo) |+ Seek head
(MKVInfo) | + Seek entry
(MKVInfo) | + Seek ID: 0x15 0x49 0xa9 0x66 (KaxInfo)
(MKVInfo) | + Seek position: 4099
(MKVInfo) | + Seek entry
(MKVInfo) | + Seek ID: 0x16 0x54 0xae 0x6b (KaxTracks)
(MKVInfo) | + Seek position: 4286
(MKVInfo) | + Seek entry
(MKVInfo) | + Seek ID: 0x11 0x4d 0x9b 0x74 (KaxSeekHead)
(MKVInfo) | + Seek position: 258431161
(MKVInfo) | + Seek entry
(MKVInfo) | + Seek ID: 0x1c 0x53 0xbb 0x6b (KaxCues)
(MKVInfo) | + Seek position: 258423821
(MKVInfo) | + Seek entry
(MKVInfo) | + Seek ID: 0x19 0x41 0xa4 0x69 (KaxAttachments)
(MKVInfo) | + Seek position: 16964
(MKVInfo) |+ EbmlVoid (size: 4012)
(MKVInfo) |+ Segment information
(MKVInfo) | + Timecode scale: 1000000
(MKVInfo) | + Muxing application: libebml v0.7.6 + libmatroska v0.8.0
(MKVInfo) | + Writing application: mkvmerge v1.6.5 ('Watcher Of The Skies') built on Feb 27 2006 18:11:08
(MKVInfo) | + Duration: 1485.500s (00:24:45.500)
(MKVInfo) | + Date: Sun Apr 23 08:24:14 2006 UTC
(MKVInfo) | + Segment UID: 0x8f 0xee 0xc6 0x99 0xfb 0x2c 0xed 0x82 0xac 0xb5 0xff 0xe7 0xa5 0xb8 0xee 0x26
(MKVInfo) |+ Segment tracks
(MKVInfo) | + A track
(MKVInfo) | + Track number: 4
(MKVInfo) | + Track UID: 622142087
(MKVInfo) | + Track type: subtitles
(MKVInfo) | + Enabled: 1
(MKVInfo) | + Default flag: 0
(MKVInfo) | + Forced flag: 0
(MKVInfo) | + Lacing flag: 0
(MKVInfo) | + MinCache: 0
(MKVInfo) | + Timecode scale: 1
(MKVInfo) | + Max BlockAddition ID: 0
(MKVInfo) | + Codec ID: S_TEXT/ASS
(MKVInfo) | + Codec decode all: 1
(MKVInfo) | + CodecPrivate, length 1236
(MKVInfo) | + Language: eng
(MKVInfo) | + Name: Song & titles
(MKVInfo) | + A track
(MKVInfo) | + Track number: 1
(MKVInfo) | + Track UID: 3222865322
(MKVInfo) | + Track type: subtitles
(MKVInfo) | + Enabled: 1
(MKVInfo) | + Default flag: 1
(MKVInfo) | + Forced flag: 0
(MKVInfo) | + Lacing flag: 0
(MKVInfo) | + MinCache: 0
(MKVInfo) | + Timecode scale: 1
(MKVInfo) | + Max BlockAddition ID: 0
(MKVInfo) | + Codec ID: S_TEXT/ASS
(MKVInfo) | + Codec decode all: 1
(MKVInfo) | + CodecPrivate, length 1238
(MKVInfo) | + Language: eng
(MKVInfo) | + Name: Full subs
(MKVInfo) | + A track
(MKVInfo) | + Track number: 5
(MKVInfo) | + Track UID: 2609632640
(MKVInfo) | + Track type: video
(MKVInfo) | + Enabled: 1
(MKVInfo) | + Default flag: 1
(MKVInfo) | + Forced flag: 0
(MKVInfo) | + Lacing flag: 0
(MKVInfo) | + MinCache: 1
(MKVInfo) | + Timecode scale: 1
(MKVInfo) | + Max BlockAddition ID: 0
(MKVInfo) | + Codec ID: V_MPEG4/ISO/AVC
(MKVInfo) | + Codec decode all: 1
(MKVInfo) | + CodecPrivate, length 39 (h.264 profile: High @L5.1)
(MKVInfo) | + Default duration: 41.710ms (23.975 fps for a video track)
(MKVInfo) | + Language: und
(MKVInfo) | + Name: Furaon Moves Not
(MKVInfo) | + Video track
(MKVInfo) | + Pixel width: 640
(MKVInfo) | + Pixel height: 480
(MKVInfo) | + Interlaced: 0
(MKVInfo) | + Display width: 640
(MKVInfo) | + Display height: 480
(MKVInfo) | + A track
(MKVInfo) | + Track number: 6
(MKVInfo) | + Track UID: 3316459148
(MKVInfo) | + Track type: audio
(MKVInfo) | + Enabled: 1
(MKVInfo) | + Default flag: 1
(MKVInfo) | + Forced flag: 0
(MKVInfo) | + Lacing flag: 1
(MKVInfo) | + MinCache: 0
(MKVInfo) | + Timecode scale: 1
(MKVInfo) | + Max BlockAddition ID: 0
(MKVInfo) | + Codec ID: A_VORBIS
(MKVInfo) | + Codec decode all: 1
(MKVInfo) | + CodecPrivate, length 4321
(MKVInfo) | + Language: jpn
(MKVInfo) | + Name: Japanese Stereo
(MKVInfo) | + Audio track
(MKVInfo) | + Sampling frequency: 48000
(MKVInfo) | + Channels: 2
(MKVInfo) | + A track
(MKVInfo) | + Track number: 7
(MKVInfo) | + Track UID: 2905351578
(MKVInfo) | + Track type: audio
(MKVInfo) | + Enabled: 1
(MKVInfo) | + Default flag: 0
(MKVInfo) | + Forced flag: 0
(MKVInfo) | + Lacing flag: 1
(MKVInfo) | + MinCache: 0
(MKVInfo) | + Timecode scale: 1
(MKVInfo) | + Max BlockAddition ID: 0
(MKVInfo) | + Codec ID: A_VORBIS
(MKVInfo) | + Codec decode all: 1
(MKVInfo) | + CodecPrivate, length 4321
(MKVInfo) | + Language: eng
(MKVInfo) | + Name: English Stereo
(MKVInfo) | + Audio track
(MKVInfo) | + Sampling frequency: 48000
(MKVInfo) | + Channels: 2
(MKVInfo) |+ EbmlVoid (size: 1024)
(MKVInfo) |+ Attachments
(MKVInfo) | + Attached
(MKVInfo) | + File name: 65659___.TTF
(MKVInfo) | + Mime type: application/x-truetype-font
(MKVInfo) | + File data, size: 30164
(MKVInfo) | + File UID: 1917265537
(MKVInfo) | + Attached
(MKVInfo) | + File name: carolingia.ttf
(MKVInfo) | + Mime type: application/x-truetype-font
(MKVInfo) | + File data, size: 34828
(MKVInfo) | + File UID: 1672065972
(MKVInfo) | + Attached
(MKVInfo) | + File name: TANGON.TTF
(MKVInfo) | + Mime type: application/x-truetype-font
(MKVInfo) | + File data, size: 62744
(MKVInfo) | + File UID: 1108634753
(MKVInfo) |+ Cluster

MKVExtract reads the MKV as:
Track 4: subtitles
Track 1: subtitles
Track 5: video
Track 6: audio
Track 7: audio
followed by 3 "attatchments" which appear to be subtitle fonts
in that exact order.

Anyone know how to fix this mess?

[RabidDog]

extract tracks 6 AND track seven. Play back both tracks, and LISTEN with your own ears for the correct track.
Then remux the correct audio and video track.
Play back on PC to confirm file correct.