Originally Posted by: RayF 
I can see their logic.
Here's a new sound loco - it's got the correct sound files loaded on - Don't mess with it!
Yeah, the drawback is like the late Taurus model that comes with too early starting sound then brake release, before actually going off,
or some steamers without the proper "bell" sounds (forgot which model),
or similar diesel sounds of BR218, VT08, and others, which I don't know whether prototypical or not,
or models with full sounds, yet only 3 available sounds??
Marklin takes no responsibility, and all can't be fixed unless we buy another new programmable sound decoder.
They don't cause much concern for me to be honest, but there are disappointed owners:
"What? I can't add an extra prototypical horn sound to that #@$@# model??"
Originally Posted by: RayF 
Now here's a new sound decoder for converting an existing loco - you'll need to load it with the right files for your loco.
In one case you discourage inexperienced owners from messing up their locos, and in the the other you encourage the experienced owner to complete his digital sound conversion with the correct files.
It's not all "evil Marklin" playing games with us, you know!.....
Sorry, Ray, didn't really mean Marklin is evil...
I just think that they're producing lesser value with their sound models though it may look quite cheap compared to other brands. But depends on how you think, you'll pay its future price of non-convertible sounds.
Just remember that there are inexperienced customers who probably aren't too concerned, yet there are also very experienced ones who like to tune their model sounds to the detail.
I just think to continue to be in business,
it's better to have the ability to accommodate both needs and don't get either of them too disappointed - which may prevent them from buying more Marklin products.
Example:
Inexperienced ones are not likely to own a sound programmer, so the original sounds will not be convertible so long as they never bought one.
Experienced ones will benefit fully if they bought the programmer - they would likely to have learnt how to do them before playing.