File extensions: mp3,flv,jpg,png,xml,mov,wav,mp4,3gpp,3gp,3g2,aac,wma,wmv,smf,amr,ogg
But it is only meaningful if you have FFMPEG installed and it converts those file extensions nicely for you. PoodLL doesn't actually do any encoding if you are uploading, it just calls on FFMPEG.
I have made some changes to that code that I hope to put on the plugins database this week. So that transcoding can take place in the background. This will improve the reliability of uploads of audio and video that needs transcoding.