If you have a fairly new version of Nero 6, you already have a DirectShow-based mp3PRO filter, since Nero ShowTime which comes with Nero 6 is a direct-show based player. All you have to do is tell Windows Media Player to use it instead of Fraunhofer's MP3 Layer-3 Decoder.1. Make sure you have Nero 6 installed.
2. Paste the information below into a text file, save it as a reg file and merge into the registry.
*******************************************************************
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\CLSID\{083863F1-70DE-11d0-BD40-00A0C911CE86}\Instance\{138130AF-A79B-45D5-B4AA-87697457BA87}]
"FriendlyName"="Nero Digital Audio Decoder"
"CLSID"="{138130AF-A79B-45D5-B4AA-87697457BA87}"
"FilterData"=hex:02,00,00,00,00,00,82,00,02,00,00,00,00,00,00,00,30,70,69,33,\
00,00,00,00,00,00,00,00,16,00,00,00,00,00,00,00,00,00,00,00,30,74,79,33,00,\
00,00,00,b0,01,00,00,c0,01,00,00,31,74,79,33,00,00,00,00,b0,01,00,00,d0,01,\
00,00,32,74,79,33,00,00,00,00,b0,01,00,00,e0,01,00,00,33,74,79,33,00,00,00,\
00,f0,01,00,00,00,02,00,00,34,74,79,33,00,00,00,00,f0,01,00,00,10,02,00,00,\
35,74,79,33,00,00,00,00,f0,01,00,00,20,02,00,00,36,74,79,33,00,00,00,00,f0,\
01,00,00,30,02,00,00,37,74,79,33,00,00,00,00,f0,01,00,00,40,02,00,00,38,74,\
79,33,00,00,00,00,f0,01,00,00,50,02,00,00,39,74,79,33,00,00,00,00,b0,01,00,\
00,00,02,00,00,3a,74,79,33,00,00,00,00,b0,01,00,00,10,02,00,00,3b,74,79,33,\
00,00,00,00,b0,01,00,00,20,02,00,00,3c,74,79,33,00,00,00,00,b0,01,00,00,30,\
02,00,00,3d,74,79,33,00,00,00,00,b0,01,00,00,40,02,00,00,3e,74,79,33,00,00,\
00,00,b0,01,00,00,60,02,00,00,3f,74,79,33,00,00,00,00,b0,01,00,00,50,02,00,\
00,40,74,79,33,00,00,00,00,70,02,00,00,20,02,00,00,41,74,79,33,00,00,00,00,\
70,02,00,00,00,02,00,00,42,74,79,33,00,00,00,00,70,02,00,00,10,02,00,00,43,\
74,79,33,00,00,00,00,70,02,00,00,30,02,00,00,44,74,79,33,00,00,00,00,70,02,\
00,00,40,02,00,00,45,74,79,33,00,00,00,00,70,02,00,00,50,02,00,00,31,70,69,\
33,08,00,00,00,00,00,00,00,01,00,00,00,00,00,00,00,00,00,00,00,30,74,79,33,\
00,00,00,00,b0,01,00,00,80,02,00,00,61,75,64,73,00,00,10,00,80,00,00,aa,00,\
38,9b,71,80,eb,36,e4,4f,52,ce,11,9f,53,00,20,af,0b,a7,70,55,00,00,00,00,00,\
10,00,80,00,00,aa,00,38,9b,71,81,eb,36,e4,4f,52,ce,11,9f,53,00,20,af,0b,a7,\
70,20,80,6d,e0,46,db,cf,11,b4,d1,00,80,5f,6c,bb,ea,2c,80,6d,e0,46,db,cf,11,\
b4,d1,00,80,5f,6c,bb,ea,00,20,00,00,00,00,10,00,80,00,00,aa,00,38,9b,71,2b,\
80,6d,e0,46,db,cf,11,b4,d1,00,80,5f,6c,bb,ea,32,80,6d,e0,46,db,cf,11,b4,d1,\
00,80,5f,6c,bb,ea,33,80,6d,e0,46,db,cf,11,b4,d1,00,80,5f,6c,bb,ea,34,80,6d,\
e0,46,db,cf,11,b4,d1,00,80,5f,6c,bb,ea,41,41,43,20,00,00,10,00,80,00,00,aa,\
00,38,9b,71,6a,91,0b,ed,4d,04,d1,11,aa,78,00,c0,4f,c3,1d,60,01,00,00,00,00,\
00,10,00,80,00,00,aa,00,38,9b,71
3. Windows Media Player 6.4 (which is the true DirectShow-based player) will play mp3PRO files!!!
4. I haven't got this yet to work with WMP7/8/9 or 10 and I've concluded that's impossible unless everyone tells MS to do so.
Make sure you reboot and then try to play mp3PRO files.
* let me know if it works or no by replying
