Which sound decoders accept sound file downloads?

I recently purchased an old Atlas HO Southern SD24 DC made in Austria. I converted it to DCC using a Digitrax DH126D decoder and a MRC 16 Bit Diesel sound decoder. The install we pretty well initially, ran and functioned well. After I put on my programming track and used JMRI to test out all the different horn sounds, the DH126D suddenly stopped responding. The sound still works fine, but no power. I did run power to the motor directly to see if motor failed, but it did work. I tried the factory reset on JMRI to reset the DH126D, but still nothing. Any ideas what happened and why?

Have any of you had good success in making your own clump foliage? If so, will you share your methods?

What's the best DCC w/sound out there for a budget? Which ones are best to stay away from?

Approximately how many LEDs can you power from a wall wart?

A few years ago, a man gave my son about 20 or so Southern diesel locos. Most are the green ones. All are DC of course. Could any of you assist me in properly identifying them as they pertain to their prototypical counterpart and also as the makers of the HO? If so, I can take some pics and forward to you if you can help. I would love to clean them up and make a display case with placards identifying each loco.

Whats the best way to add weight to tankers and still keep it hidden?

Whats a good economical power supply for lighting on the layout? I have been using old cell phone chargers since the put out between 6-8 volts mostly. What are your suggestions?

I have a Bachmann Item# 52401  HO 2-8-4 Berkshire Steam Loco DCC/Sound that the wiring between the loco and tended has pulled out of both harness plugs. I have purchased both replacement 2 pin and 4 pin plugs with harness, but I cannot find a wiring diagram anywhere that shows which wire goes where. The circuit board/decoder board inside the tender says soundtraxx. All the wires I am speaking of (there are 6 total) connect to this board, but I have no way of know how to match up to the new harnesses. Can anyone help? If so, email me at rstroud66@gmail.com.