I think it's something wrong with the codecs because in avi or mpg files it also changed the total length of the video but would still play, so it would say the files was 00:00:23, when the actual time was something like 00:38:41 probably could have fixed it with reinstalling all the codecs on my machine, but rather than do that, just did a soft install of xp pro, and it fixed it. Good thing too, because I used a copy of the cd slipstreamed with sp2 now and updated it at the same time, so 2 birds with 1 stone
And FYI: to do a soft install, boot of the windows xp cd you installed your os with, press enter to continue, f8 if it asks you and R to repair the installation of xp. You need to follow normal install prompts, it will look like a fresh install, but trust me, if you did R for repair and not esc to not repair your fine. You also have to activate again. All your drivers will be there, but you still need to do windows updates again. Also Install any service packs you updated to as the version of xp cd you used will use it's files instead, so if you have no sp on it it will install no sp, sp1, sp2, ect. Just what's on the cd will load. And default settings of windows will change, files will not be deleted, not much changes, but it fixes all system files. Enough of my rambling I'm out.