Thanks Danilo, I've now downloaded ffmpeg for windows from here (http://ffmpeg.zeranoe.com/builds/) I've unzipped it but don't know what to do with it. The error message is still coming up. I'll go back to the forum and see if someone can talk me through a windows install. Cheers for your help. Regards, Liam. From: daniloshiga@xxxxxxxxx Date: Wed, 20 Feb 2013 10:26:57 -0300 Subject: [gpodder] Re: File conversion To: gpodder@xxxxxxxxxxxxx Hi Liam, Basically, the extension that does the conversion depends on ffmpeg software, I use it sometimes too. If you're under linux, just install the package, with sudo apt-get install ffmpeg if you're on ubuntu (or debian based), or sudo yum install fmpeg if you're on Fedora. unfortunatelly I don't know if the extension works on Windows. good luck On Wed, Feb 20, 2013 at 10:18 AM, Liam Erickson <liamisnowon@xxxxxxxxxxx> wrote: Hi, Thanks for an awesome application. I'm just new to gPodder and have a question about file formats: My portable media device is limited to MP4 and .avi for video and .mp3 for audio. I have found that video podcasts from iTunes and some videos from youtube are downloaded in an incompatible file format for my player. I have tried going into the preferences, extensions tab, and selecting some of t the conversion extensions but it just comes up with an error: "Extension cannot be activated. Command not found: ffmpeg". Is there a way that gPodder can convert my files so that when I sync my device I can play them? Thanks in advance. Kind regards, Liam. -- Danilo Shiga Coordenador de Desenvolvimento no Grupo Voxna Bacharel em Informática - USPLinux User #544126