Sorry to be late responding to this. I only just logged on.
MyLocoSound are only soundcards. They do not control the motion of the loco. The only devices I know of which do sounds and loco control are Revolution and BlueRail. Both only do US sounds. The former is expensive and not currently available. The latter can be used only for very small G Scale locos.
What has caused the confusion is that Freelander would have seen our small scale soundcards at Warley. These do indeed control the loco motion as well as the sounds. We did not demonstrate our large scale soundcards at Warley.
MyLocoSound soundcards are designed to work in all large scale locos except DCC. Therefore they work with all known radio control systems and with unmodified track powered locos like LGB, Bachmann, etc. In radio controlled locos, the transmitter function buttons are normally used to control sounds like the whistle, horn, bell, brake pump, guard's whistle, etc. With track power, magnets under the track can be used to trigger sounds and we also provide some automatic facilities.
Comparing our original and current soundcards, we now have a much larger selection of better quality sounds, many of them recorded. The big difference is in the way that sounds are adjusted. In the original soundcard, you had to use a screwdriver so that meant opening up the loco each time you wanted to change the volume, the whistle tone, etc. Now we use a simple TV style remote control which does not need to "see" the soundcard. You just point the remote control at the loco and press the buttons to adjust the sounds....just like your TV. No need to open up the loco. Therefore GAP is spot on.
The remote control can also be used to trigger sounds but, being an IR device, the range outside is limited.
Finally, I might just mention that the price of our large scale soundcards is still £49 but possibly not for much longer. If the pound continues its downward path we may be forced into an increase in the new year.
Regards
Peter Lucas
MyLocoSound