Thanks for the logs. The logs shows that Mezzmo server is passing the AVI files directly to your TV, but your TV is refusing to play them for some reason. It could be that the AVI file's encoding is either non-compatible with your Samsung TV's firmware (your TV cannot decode them) or the AVI file's encoding is corrupted in some way.

A few things to try:

1. Change the device profile to 'Samsung D'. Go to the Media Devices dialog to do this. Restart your Mezzmo server and try streaming one of the AVI files again. If it does not help, then change back to the 'Samsung C' device profile.

2. In Mezzmo, right-click on one of the AVI files and click 'Pre-transcode File'. In the Pre-transcode File dialog, select your TV and click Choose Formats. In the Transcoding Formats dialog, choose the bolded format and select the 'Force full transcode of all channels' checkbox. Click OK to close the Transcoding Formats dialog and then select the 'Pre-transcode files even if they match the devices formats' checkbox. Click OK and the file will begin pre-transcoding. Go to the Transcoding pane to see progress. Once it has been completed, then try streaming that AVI on your Samsung TV again. If it plays, then it may suggest the original AVI file cannot be played on your TV.

Let us know how you go.