[LAU] Strange aiff files

Hi I'm having trouble opening a few aiff files, that were send to me by someone. They were originally part of a recording session in (I think) protools on a mac. Probably they were saved to CDR and handed over to the windows user that has mailed them to me. They are longish bounces of vocal takes. Anyways, the problem is that they open different each time. Sometimes the first part is missing, sometimes the last part. I tried opening them in both mhwaveedit and Renoise. The sender checked and the files have exactly the correct content on her computer. What could be the problem here? Is it in fact something else that I didn't think of that is at play? I don't know about renoise, but isn't it so that almost every audio app is using libsndfile for opening/converting-from aiff files? So I should expect similar results in all apps, or? Is there a way to check the problematic files to get closer to the problem? Is there a conversion I should try (tried my a2wav script that uses mplayer, still some parts missing). NB: This is with a super-fresh install of ubuntu 9.10 -- Atte http://atte.dk http://modlys.dk http://virb.com/atte