OK, I'm using the latest MC version that has been released (i.e. not a Beta). I'll put the info below. What doesn't work is MC crashes. Every time. Like clockwork. Never not.
Media Center Registered 9.0.180 -- C:\Program Files\J River\Media Center\
Microsoft Windows 98 SE
Intel Pentium III 498 MHz MMX / Memory: Total - 261 MB, Free - 0 MB
Resource Info: System - 16 %, GDI - 56 %, User - 16 %
Internet Explorer: 6.0.2800.1106 / ComCtl32.dll: 5.81 / Shlwapi.dll: 6.00.2800.1106 / Shell32.dll: 4.72.3812.600 / wnaspi32.dll: 4.71 (0001) , ASPI for Win32 (95/NT) DLL, Copyright © 1989-2002 Adaptec, Inc. / Aspi32.sys: N/A
Ripping / Drive F: Copy mode:ModeBurstBigBuffer CD Type:Auto Read speed:Max
Digital playback: Yes / Use YADB: Yes / Get cover art: Yes / Calc replay gain: Yes / Copy volume: 32767
Eject after ripping: No / Play sound after ripping: Yes Soundfile: chord.wav
Burning / Drive F: PLEXTOR CD-R PX-W4012A Addr: 0:0:0 Speed:40 MaxSpeed:40 Use MJ Engine:Yes
Test mode: No / Eject after writing: Yes / Direct decoding: Yes / Write CD-Text: No
Use playback settings: No / Normalization: None