of course you can. i did point that out, didn't i?
but if you have to edit an adx file TAKEN OUT OF NACK'S PATCH (which i believe you might have to do at some point), it is 22050khz 16-bit mono by default, and if you convert that to wav with, say, dkz studio, it may have difference in quality then, because you can't, to my knowledge, alter the frequency. so basically you would then edit 22050khz file, which you have to save as a 22050khz file, so that you convert it to adx 22050khz file.
but as i said (or at least i thought i said), this isn't necessarily a problem with files taken straight out the game.
now, secondly, i'd just like to say that i may sort of give you some andy gray files replaced in the game. there are naturally some files, from which i've taken out all "clives", but i'd say, most of the files are probably usable. i may have to do some parts again, as i'm a bit bored already with some samples. things are a bit vague at the moment though, as i'm not sure what i'm going to do next. i've done a bit of everything, and now can't really decide.
and of course there is always the issue that i've done some eq to all the files in order to make them sound better with champion, and it might be that they wouldn't sound natural with tyldesley, dunno.