If you are puzzled with something, try here for answers

The mixd.tv app currently plays the best video quality available. This behavior is not configurable by the user, though it may become a feature of the app in the future! However on Vimeo we are compromising to lower quality to speed up downloading for now.

1. The player may not register the switch from headphones to the built-in sound, depending on system settings and installed codecs - just pause the video and continue, to trigger audio playback with the new output.
2. If you are using the Perian CoDec selection on your system, it can interfere with the Sound Settings of our player. Try to deactivate / remove Perian and reboot your Mac.

There are multiple reasons why some videos may not be playing back:

1. There is no connection to stream the video (error shown)
2. The video is no longer available on the site that had hosted it (error shown)
3. One of our access protocols cannot be used on your system/network (the mixd.tv app is using different ways to access videos via HTTP, MMS, BitTorrent, etc. If one of those is not working in your environment other videos may still work).