Video playback (sometimes) works + some small changes/cleanup

Video playback works if you're lucky. This requires more work, because we can get back all kinds of video types (avi, mkv, mp4). To let PMS handle everything correctly, we need to give it the right container/audiocodec/videocodec information. Currently MP4/H264/AAC is hardcoded.
I also encountered a *lot* of dead links and also some of the live streaming stuff needs to be filtered out or handled differently, but it's a start :)