Huge WAV file 4.57GB

[MyNameIsNeo]

Okay i have a cricket match that I recorded using my TV-Tuner card [whole match is about 20 GB].
Now I recorded 8 hours seperately into MPEG2 format and then tried to use the SVCD-> DivX conversion guide.

I split audio using DVD2avi
then converted it to WAV using Diskwriter of Winamp

It came out to be 4.57 GB. When I tried to play it, it said file damaged [in winamp and in XingMP3 player]. Windows Media player 9 opens the file and it doesn't quiteshow me the correct duration.
shows about 39 minutes and stops right after that time(it plays correctly for 39 minutes), when infact the length of the audio is more like 446 minutes.
U have to understand that this is a cricket match.

If the file okay? or is this a bug in the softwares that try to play it.

Im running WINXP Pro with 1GB of PC2700 RAM and Athlon XP 2200+. HDD is huge[80GB].

please help

regards,
Neo