You can find here soundclips of the MÁV M61, NSB Di3, SJ T41 and DSB MX series. 

NEW MÁV M61 sounds (all mp3): 
 
 

Locomotive	Description	Length	44100Hz/stereo	22050Hz/mono
M61,001	The M61,001 is starting at Tapolca with train 9725 on 17th January 1999.	0m53.6s	859034 bytes	268669 bytes
M61,004	The M61,004 is starting at Fonyód on 29th November 1998 with train S 8807	0m49.5s	687908 bytes	196545 bytes
M61,004	The M61,004 is accelerating at Szepezdfürdõ on 28th November 1998 with train S 9702	0m43.1s	604525 bytes	172826 bytes
M61,010	The M61,010 is accelerating at Badacsonytomaj in November 1998 with train S9702	0m34.6s	486400 bytes	139076 bytes
M61,010	The M61,010 is accelerating at Ábrahámhegy on 30th December 1999 with train 9718	0m06.1s	87040 bytes	25078 bytes
M61,010	The M61,010 is accelerating at Nemesgulács-Kisapáti on 30th December 1999 with train 9718	0m50.2s	704731 bytes	201456 bytes
M61,010	The M61,010 is accelerating at Badacsonyörs on 30th December 1999 with train 9718	0m33.7s	541675 bytes	135419 bytes
M61,010	The M61,010 is accelerating at Szepezdfürdõ on 30th December 1999 with train 9718	1m12s	1153149 bytes	288496 bytes
M61,017	Starting up the M61,017's engine after 3 idle days	0m13.4s	188708 bytes	54021 bytes
M61,017	The M61,017 is accelerating. Recorded from above the exhaust pipe.	0m37.6s	528823 bytes	151197 bytes
M61,017	The M61,017 is accelerating.	0m57.5s	807131 bytes	230818 bytes
M61,019	The M61,019 is accelerating at Ábrahámhegy on 31st December 1999 with train 9718	1m16.4s	1070811 bytes	306155 bytes
M61,019	The M61,019 is accelerating at Badacsony on 31st December 1999 with train 9718	1m01.9s	868205 bytes	248268 bytes
M61,019	The M61,019 is accelerating at Badacsonylábdihegy on 31st December 1999 with train 9718	1m00.3s	845165 bytes	241580 bytes
M61,019	The M61,019 is accelerating at Balatonrendes on 31st December 1999 with train 9718	1m15.1s	1045577 bytes	301035 bytes
M61,019	The M61,019 is accelerating at Balatonszepezd on 31st December 1999 with train 9718	0m51.7s	724845 bytes	207308 bytes
M61,019	The M61,019 is accelerating at Szepezdfürdõ on 31st December 1999 with train 9718	1m14s	1037531 bytes	296647 bytes
M61,019	The M61,019 is accelerating at Balatonakarattya in March 1999 with train 9728	1m03.3s	887954 bytes	253701 bytes
M61,019	The M61,019 is accelerating at Csopak in March 1999 with train 9728	1m13.3s	1174883 bytes	294234 bytes
M61,019	The M61,019 is accelerating at Füle in March 1999 with train 9728. Recorded on a bridge, the train is coming from the left and passing to the right	0m56.2s	900284 bytes	225176 bytes
M61,020	The M61,020 is accelerating at Ábrahámhegy on 31st December with train 9746	1m04.6s	905508 bytes	258821 bytes
M61,020	The M61,020 is accelerating at Badacsony on 31st December with train 9746	1m18.9s	1106285 bytes	316291 bytes
M61,020	The M61,020 is accelerating at Badacsonylábdihegy on 31st December with train 9746	1m21.6s	1306540 bytes	408555 bytes
M61,020	The M61,020 is accelerating at Balatonrendes on 31st December with train 9746	0m48.3s	678400 bytes	194038 bytes
M61,020	The M61,020 is accelerating at Szepezdfürdõ on 31st December with train 9746	1m03.5s	763776 bytes	254642 bytes
M61,020	The M61,020 is accelerating at Badacsony on 16th January 1999 with train 9725	0m37.4s	600607 bytes	150361 bytes
M61,020	The M61,020 is accelerating at Badacsony on 13th March 1999. Recorded in the power room.	1m30.7s	1453244 bytes	363416 bytes
M61,020	The M61,020 is accelerating at Révfülöp on 18th April 1999 with train 9714	1m05.2s	1044480 bytes	261224 bytes
M61,020	The M61,020 is passing by near Révfülöp on 28th November 1999 with train 9705	0m34s	545436 bytes	136464 bytes
M61,020	The M61,020 is accelerating at Balatonrendes on 18th April 1999 with train 9714	1m32.2s	1293165 bytes	369685 bytes
M61,020	The M61,020 is accelerating at Polgárdi-Ipartelepek on on 29th November 1998 with train 9725	0m52.8s	741303 bytes	211905 bytes
M61,020	The M61,020 is accelerating at Balatonudvari on 29th November 1998 with train 9725	1m21.4s	1304032 bytes	326008 bytes
M61,020	The M61,020 is accelerating at Balatonkenese-Üdülõtelep on 16th January 1999 with train 9725	0m37.4s	525531 bytes	150256 bytes

NEW foreign NoHAB-GM sounds (all mp3): 
 
 

Locomotive	Description	Length	44100Hz/mono	22050Hz/mono
DSB MX 1001	The engine is turning up on the "Diesel Days" show at Hamar/Norway on 8th August 1999	0m42.9s	343771 bytes	172095 bytes
NSB Di3.620	The engine is passing by with a passenger train in tha Rauma-valley near Flatmark on 3rd August 1999	0m20.3s	245447 bytes	82024 bytes
NSB Di3.620	The 3.620 is accelerating at Åndalsnes with the night train on 3rd August 1999.	1m22.2s	988369 bytes	329665 bytes
NSB Di3.620	The 3.620 is accelerating at Bjorli with the night train on 3rd/4th August 1999.	1m28.2s	706560 bytes	353384 bytes
NSB Di3.621	The engine is turning up on the "Diesel Days" show at Hamar/Norway on 8th August 1999	0m58s	465188 bytes	232699 bytes
NSB Di3.642	The engine is shunting at Mo I Rana on 5th August 1999.	0m39.2s	314305 bytes	157362 bytes
SJ T41.204	The engine is turning up on the "Diesel Days" show at Hamar/Norway on 8th August 1999	0m35.6s	285675 bytes	142838 bytes
SJ T41.204	The engine is shunting at Hamar on 8th August 1999	1m09.4s	555676 bytes	277943 bytes
SJ T41.204	The sound of the horn	0m6.6s	54334 bytes	34090 bytes
SJ T41.204	The engine is turning up on the "Diesel Days" show at Hamar/Norway on 8th August 1999	1m08.8s	486922 bytes	243566 bytes

Old sounds: 

Most of the old songs are onboard-records. 

Sound recorded on  28th November 1998: 

acceleration1 (520934 bytes) 

acceleration2 (323052 bytes) 

acceleration3 (583220 bytes) 

These three below were recorded on 22nd-23rd November 1998. 

020bereny , 489162 bytes, the M61,020 is starting from Balatonberény on 22nd November 1998. 

019abrah , 434420 bytes, the M61,019 is starting from Ábrahámhegy on 23rd November 1998. 

85kmh , 129756 bytes, the M61,010 near at his top-speed at Székesfehérvár-Repülõtér (i wrote earlier, zhat it was recorded at Balatonkenese: sorry for my mistake) on 23 rd November 1998. 

M61,004 is starting from Csajág. 

004csajag.zip , 944827 bytes, zipped wave format, OR acc_csajag.wav , 292688 bytes, compressed waveform file. 

Greetings to the tourists at Badacsony. 

pipe.wav , 66590 bytes OR pipe2.wav , 25618 bytes, compressed waveform file. 

ATTENTION! 

horn.wav , 14110 bytes. 

The shunting manoeuvres before the start at Tapolca. 

shunting.wav , 302876 bytes. 

In the power room 

power_room.wav , 217598 bytes. 

Two majestic soundfiles of accelerating 

acceler1.wav , 591794 bytes, acceler2.wav , 551230 bytes. 

Other Sounds: 

The M41, 2160 is accelerating at Balatonfûzfõ. 

M41,2160.wav , 325970 bytes.