Tyna01,
Is there something wrong wth your player? Is that why you want to flash it??
If the s1fwx doesn't detect your player then it's
not a s1mp3 player. It is probably a Sigmatel or Sunplus solution. If that's the case, then you won't be able to use the s1fwx to extract your firmware as it's only designed for the S1mp3 players.
I know this as I have the exact same player, but it uses a Sunplus solution instead.
Try this tool:
UDisk Checker.