I am fairly new to AV and PTE so it may be that I am overlooking something that should be obvious, but if I am, please help before I get the screaming abdabs! I have placed all my slides in the programme in the order they are to appear, selected the music which has been converted to MP3, opened the timeline window and clicked on play. The thumbnails appear and the music plays as it should do. So far great. My problem begins when I hit the preview button. Whether in the the main window or in timeline, the slide show begins, but no music. I thought it might be a problem with Beta 5 #2 so I downloaded #3, but the problem remains. I do not have this problem with PTE 4.48, so why does it happen with what is obviously an improved programme. Can anybody help me?