tonypisa, Did your player come with a sample video, if so can you upload it and leave a link.

The reason the sound is lost on the sample is because it is not a completed conversion I just ran it for a few seconds and then stopped it.

Can you give me some details on your player:
Capacity
Firmware version
Screen size

Hello Tadad, Thanks for all the help.
As mentioned in another post, the only video that works is one that came with the unit (160*120 @16fps). It can be found here: http://rapidshare.com/files/9166575/original.amv (Actually it is a cute xmas video).

The s1fx program gives this read out:
ic version = 0x0101
storage info = 0x0106, 0x0000, 0x0000, 0x0000
device = 'S1 Mp3 Player'
manufacturer = 'Wilson Co. Ltd.'
bootflash type = 'F641'
brom version = 3.0.00
firmware version = 3.5.37
read boot record...
detect firmware size....
firmware size = 0x0077FE00

The unit is 1.8 in, 2GB and made by Sage human electronics and marked model V12. I have filled the player up to 2 GB , and the last mp3 file play fine, so I don't think it is hacked. It is really weird .
Just added a pic:
http://img412.imageshack.us/img412/5653/v12fx2.th.jpg

Thanks again.

tonypisa, Can't find any problems with the info you have given and the sample seems quite standard. It may be an idea to give your player a Fat format if you can just to rule out any bad sector or memory problems.
Also extracting, repairing and reloading the firmware can sometimes help, but if you can play the sample no probs i doubt this would make any difference.
I have done another sample for you but this time I have pre-processed the video and resized, reset the frame rate etc prior to converting it to AMV.
http://uploaded.to/?id=a9afae

@tad
Tried this one and same thing. Meantime, I found a fellow on an Italian forum that has the same problem and stumbled across something even stranger. If I stop the video before it dies (within 12 sec), and start again, it will go for another 12 sec. In theory I could watch the whole thing about 10 sec at a time, stopping and starting. Weirder and weirder...
Am wondering whether to try and format and/or flash it, but I would rather change it if I can get the ebayer to agree.

tonypisa, Go into the movie player and press the menu button, scroll down to "Repeat" and make sure it is set to "Normal".
It sounds like it may be set to "Intro"

Damn damn damn - that's it! Never thought it would eve havve that sort of option! Boy do I feel stupid!

A million thanks.

tonypisa, LOL :) , I should have thought about it earlier, just glad that was the problem as it was bugging me big time.

I found at least two other people with the same problem on other sites. Sure wuold help if these devices came with a decent manual. Mine doesn't even mention video!!
I'll see if I can write one after I get to know thew unit better. Thanks again.