I've only been using Trisquel for a few weeks now. I was amazed how YouTube
videos actually played via Gnash the open source alternative to flash. I
enabled html5 video and it's flawless when the uploader has it available.
I've used OggConvert (to convert video and audio to ogg vorbis formats.
I've also used Sound Converter to batch export my mp3 library to ogg vorbis
it's wonderful.
I'm currently exporting a video from Pitivi and I recorded the audio via my
phone as I don't have a microphone attached to my computer.
http://youtu.be/k83jBtUoAgA
Trisquel is the first FSF approved distribution I can honestly say does
everything I need my computer to do. It's stable, responsive and amazing.
I've also done a few unorthodox things.
Added XFCE 4 as I prefer it to GNOME
I did a full install on a USB flashdrive and it works on my computer
wonderfully and is fully functional.