I have tried two converting two different .aiff files now to .wav format. Each time I try, I get the message that it can't be done because the files are corrupt. Fortunately, I was able to convert them through iPod with no problems at all. I wouldn't mind except for the fact I paid for this version of Switch. There was no "free" version - after 14 days, I was shut out and had to pay. Despite that, I think it's a great piece of software except for my .aiff problems.