"Here are the sources. You'll probably have a hard time compiling them,
but it's probably easier than writing the driver from scratch! ;)

This is all I can do."

"Open for anyone to use. At least no viral thing as GPL! :)

Enjoy."

(Concatenated from e-mail discussion with Davy Wentzler)

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                  428    3021  14.2% -lh5- 1ac1 Aug 21  2010 Envy24HT/accel.c
[generic]                 1903    7810  24.4% -lh5- 9593 Feb 21  2010 Envy24HT/ak4114.h
[generic]                 3669   16021  22.9% -lh5- 0220 Feb 21  2010 Envy24HT/ak_codec.c
[generic]                  479    1400  34.2% -lh5- af55 Feb 21  2010 Envy24HT/ak_codec.h
[generic]                 3326   13746  24.2% -lh5- 60ff Feb 21  2010 Envy24HT/ak_codecbak.c
[generic]                  225     510  44.1% -lh5- a066 Feb 21  2010 Envy24HT/ak_codecbak.h
[generic]                 1358    4656  29.2% -lh5- 3e00 Aug 21  2010 Envy24HT/driver-init.c
[generic]                 1927    7142  27.0% -lh5- 4f5b Feb 21  2010 Envy24HT/DriverData.h
[generic]                 1256    4254  29.5% -lh5- 84d9 Jul  9  2009 Envy24HT/EnableMonitoring/driver-init.c
[generic]                32105   79532  40.4% -lh5- 490f Jul  9  2009 Envy24HT/EnableMonitoring/EnableMon
[generic]                   96     111  86.5% -lh5- 9014 Jul  9  2009 Envy24HT/EnableMonitoring/makefile
[generic]                   15      15 100.0% -lh0- 6f50 Jul  9  2009 Envy24HT/EnableMonitoring/s
[generic]                 6628   30049  22.1% -lh5- b08e Aug 21  2010 Envy24HT/Envy24HT.c
[generic]                  687    3234  21.2% -lh5- 9ac3 Aug 19  2010 Envy24HT/Envy24HTForMOS.dev
[generic]                  238    1085  21.9% -lh5- 2fdf Aug 25  2010 Envy24HT/Envy24HTForMOS.layout
[generic]                 1041    6746  15.4% -lh5- 0507 Feb 21  2010 Envy24HT/gatestubs.c
[generic]                  631    2755  22.9% -lh5- 5ec5 Feb 21  2010 Envy24HT/gatestubs.h
[generic]                 1238    8237  15.0% -lh5- 7244 Feb 21  2010 Envy24HT/gatestubs_aros.c
[generic]                 1003    5362  18.7% -lh5- 41d7 Feb 21  2010 Envy24HT/gatestubs_aros.h
[generic]                 1129    7763  14.5% -lh5- fb12 Apr 14  2010 Envy24HT/gatestubs_mos.c
[generic]                  405    1137  35.6% -lh5- 39f6 Apr 14  2010 Envy24HT/gatestubs_mos.h
[generic]                 1308    4885  26.8% -lh5- e622 Aug 19  2010 Envy24HT/I2C.c
[generic]                  388     966  40.2% -lh5- fb69 Feb 21  2010 Envy24HT/I2C.h
[generic]                 2158    9837  21.9% -lh5- b773 Aug 21  2010 Envy24HT/interrupt.c
[generic]                  211     631  33.4% -lh5- 17ae Feb 21  2010 Envy24HT/interrupt.h
[generic]                 1731    6033  28.7% -lh5- 975f Jul  9  2009 Envy24HT/julia/dos src/ak4114.cpp
[generic]                  521    1162  44.8% -lh5- 6e86 Jul  9  2009 Envy24HT/julia/dos src/ak4114.h
[generic]                 7838   20098  39.0% -lh5- 1469 Jul  9  2009 Envy24HT/julia/dos src/ak4114.obj
[generic]                 1639    5731  28.6% -lh5- 8d0d Jul  9  2009 Envy24HT/julia/dos src/cdc4358.cpp
[generic]                  512    1153  44.4% -lh5- cd51 Jul  9  2009 Envy24HT/julia/dos src/cdc4358.h
[generic]                 7215   19239  37.5% -lh5- 385f Jul  9  2009 Envy24HT/julia/dos src/cdc4358.obj
[generic]                 1966   10031  19.6% -lh5- 78fb Jul  9  2009 Envy24HT/julia/dos src/codecctl.cpp
[generic]                  739    2004  36.9% -lh5- 754c Jul  9  2009 Envy24HT/julia/dos src/codecctl.h
[generic]                 2029   14159  14.3% -lh5- 59c7 Jul  9  2009 Envy24HT/julia/dos src/codecreg.h
[generic]                  257     991  25.9% -lh5- f2ba Jul  9  2009 Envy24HT/julia/dos src/debug.h
[generic]                 4357   18607  23.4% -lh5- 258e Jul  9  2009 Envy24HT/julia/dos src/dos.h
[generic]                10788   44302  24.4% -lh5- cf59 Jul  9  2009 Envy24HT/julia/dos src/envyht.bak
[generic]                10811   42144  25.7% -lh5- 3aca Jul  9  2009 Envy24HT/julia/dos src/envyht.cpp
[generic]                 3329   11353  29.3% -lh5- 6d3b Jul  9  2009 Envy24HT/julia/dos src/envyht.h
[generic]                19789   48137  41.1% -lh5- 4ea8 Jul  9  2009 Envy24HT/julia/dos src/envyht.obj
[generic]                 4237   29092  14.6% -lh5- 3bad Jul  9  2009 Envy24HT/julia/dos src/envyreg.h
[generic]                  313    1439  21.8% -lh5- c7f5 Jul  9  2009 Envy24HT/julia/dos src/hw.h
[generic]               325623  325623 100.0% -lh0- a254 Jul  9  2009 Envy24HT/julia/dos src/juli0312.zip
[generic]                  237     599  39.6% -lh5- 0ad8 Jul  9  2009 Envy24HT/julia/dos src/juli49.dsk
[generic]                62113  159009  39.1% -lh5- dc6e Jul  9  2009 Envy24HT/julia/dos src/juli49.exe
[generic]                 1519    6323  24.0% -lh5- 1cca Jul  9  2009 Envy24HT/julia/dos src/juli49.prj
[generic]                 1176    5136  22.9% -lh5- 9246 Jul  9  2009 Envy24HT/julia/dos src/juliat.dsp
[generic]                  205     535  38.3% -lh5- b93c Jul  9  2009 Envy24HT/julia/dos src/juliat.dsw
[generic]               157364  427008  36.9% -lh5- e537 Jul  9  2009 Envy24HT/julia/dos src/juliat.ncb
[generic]                13977   75776  18.4% -lh5- 70d1 Jul  9  2009 Envy24HT/julia/dos src/juliat.opt
[generic]                  807    2333  34.6% -lh5- 0b33 Jul  9  2009 Envy24HT/julia/dos src/juliat.plg
[generic]                 6989   24319  28.7% -lh5- 9c86 Jul  9  2009 Envy24HT/julia/dos src/main.bak
[generic]                 7014   24041  29.2% -lh5- 728b Jul  9  2009 Envy24HT/julia/dos src/main.cpp
[generic]                15971   31139  51.3% -lh5- 072a Jul  9  2009 Envy24HT/julia/dos src/main.obj
[generic]                 8615   45021  19.1% -lh5- e412 Jul  9  2009 Envy24HT/julia/dos src/menu.cpp
[generic]                  277     873  31.7% -lh5- 90da Jul  9  2009 Envy24HT/julia/dos src/menu.h
[generic]                20804   52182  39.9% -lh5- bd02 Jul  9  2009 Envy24HT/julia/dos src/menu.obj
[generic]                 3671   26624  13.8% -lh5- dd38 Jul  9  2009 Envy24HT/julia/initializing procedure of juli.doc
[generic]                19096   19096 100.0% -lh0- b736 Jul  9  2009 Envy24HT/julia/initializing procedure of juli.pdf
[generic]                 4037   27136  14.9% -lh5- 522f Jul  9  2009 Envy24HT/julia/juli@ control panel.doc
[generic]                 7243    7243 100.0% -lh0- a135 Jul  9  2009 Envy24HT/julia/juli@ control panel.pdf
[generic]               124141  124141 100.0% -lh0- e5de Jul  9  2009 Envy24HT/julia/juli@ intro.pdf
[generic]                69226   69226 100.0% -lh0- 6d1d Jul  9  2009 Envy24HT/julia/juli@_block01.pdf
[generic]                16921  145920  11.6% -lh5- 73cc Jul  9  2009 Envy24HT/julia/juli@_information.doc
[generic]                  410     626  65.5% -lh5- d9fd Jul  9  2009 Envy24HT/Makefile
[generic]                  273     409  66.7% -lh5- 28b5 Feb  1  2010 Envy24HT/Makefile.aros
[generic]                  140     512  27.3% -lh5- 4ae5 Jul  9  2009 Envy24HT/Makefile.dep
[generic]                  518     990  52.3% -lh5- 4c2a Jul  9  2009 Envy24HT/Makefile.in
[generic]                  700    2081  33.6% -lh5- e7ff Aug 19  2010 Envy24HT/Makefile.win
[generic]                10661   43835  24.3% -lh5- b864 Aug 21  2010 Envy24HT/misc.c
[generic]                  621    2241  27.7% -lh5- 1e38 Feb 21  2010 Envy24HT/misc.h
[generic]                 2343   10299  22.7% -lh5- fe09 Feb 21  2010 Envy24HT/pci_aros.c
[generic]                  847    2892  29.3% -lh5- cb17 Aug 21  2010 Envy24HT/pci_openpci.c
[generic]                 1893    9135  20.7% -lh5- 8359 Feb 21  2010 Envy24HT/pci_os4.c
[generic]                  107     158  67.7% -lh5- 84b3 Feb 21  2010 Envy24HT/pci_wrapper.c
[generic]                 1285    5297  24.3% -lh5- 9618 Aug 21  2010 Envy24HT/pci_wrapper.h
[generic]                  746    1444  51.7% -lh5- 16fe Jul  9  2009 Envy24HT/README
[generic]                 3759   12962  29.0% -lh5- 47ee Feb 21  2010 Envy24HT/regs.h
[generic]                  837    2378  35.2% -lh5- 5684 Feb 21  2010 Envy24HT/Revo51.c
[generic]                  301     645  46.7% -lh5- 23a0 Feb 21  2010 Envy24HT/Revo51.h
[generic]                   63      69  91.3% -lh5- 29d9 Aug 21  2010 Envy24HT/version.h
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total        81 files 1034453 2191856  47.2%            Nov 16 19:34