I have a number of wma files that won't load into Express Scribe, so I'm converting them to wav in Switch. I'm having problems in that the first file will convert successfully (albeit very slowly), and then any subsequent files I select to convert, it works very quickly and results in a 2kb wav file which is empty. I'm using the basic free program at this stage, and would like to upgrade, but I want confirmation that this isn't going to continue in the paid version before committing. I'd have to pay for another program if I can't resolve this issue. It also does the same thing when trying to convert them to mp3. Please help!