1. Download the kernel patch from: http://groomlakelabs.com/grandamp/code/
2. `gunzip` the patch and copy to your kernel src. Ex: /usr/src/linux
3. Patch the kernel.  Ex: `cd /usr/src/linux; patch -p1 < powermate-*.patch`
4. Run `make menuconfig`, and configure the kernel based on the example info below.

<A Linux 2.4.19 example>

[Code maturity level options  --->]
	
	[*] Prompt for development and/or incomplete code/drivers

[Input core support  --->]

	<*> Input core support
	<*>   Keyboard support
	<*>   Mouse support
	(640)    Horizontal screen resolution
	(480)    Vertical screen resolution
	<*>   Joystick support
	<*>   Event interface support

[USB support  --->]

	<*> Support for USB
	 [ ]   USB verbose debug messages
	 --- Miscellaneous USB options
	 [*]   Preliminary USB device filesystem
	 [ ]   Enforce USB bandwidth allocation (EXPERIMENTAL)
	 [ ]   Long timeout for slow-responding devices (some MGE Ellipse UPSes)
	 --- USB Host Controller Drivers
	 < >   EHCI HCD (USB 2.0) support (EXPERIMENTAL)
	 <*>   UHCI Alternate Driver (JE) support
	 < >   OHCI (Compaq, iMacs, OPTi, SiS, ALi, ...) support
	 --- USB Human Interface Devices (HID)
	 <*>   USB Human Interface Device (full HID) support
	 [*]     HID input layer support
	 [*]     /dev/hiddev raw HID device support
	 < >   Wacom Intuos/Graphire tablet support
	 <*>   Griffin Technology PowerMate support

</A Linux 2.4.19 example>

5. Finish the config to your liking, then save the .config
6. Run: `make dep bzImage`
7. Install yer new kernel (copy the kernel, `/sbin/lilo`, `reboot`) Don't forget to plug in the Powermate!

* During the reboot, you should se something similar to:

	hub.c: USB new device connect on bus1/1, assigned device number 2
	input: Griffin PowerMate on input0

8. Download the XMMS Plugin from: http://groomlakelabs.com/grandamp/code/
9. Extract where ever you feel comfortable...
10. cd into the extracted directory and type `configure`
11. cd into the extracted directory and type `make`
12. cd into the extracted directory and type `make install`
11.  If your Powermate is plugged in, you should be able to simply run xmms and configure the plugin. 

* This assumes that you have no other USB HID device.  
  If so, you will need to check `dmesg` to see which event device to address.
  
  If you experience problems, or like what you see, drop me a lime 
  at tejohnson at yahoo dot com.
  
  I'm not positive whom is responsible for maintaing the powermate kernel 
  driver, but this was essentially a quick hack to get something workable
  in my car (http://groomlakelabs.com/grandamp/).  The 2.4.17 patch is the 
  original from William R Sowerbutts, and the 2.4.19 patch is my revision
  so it may be built on 2.4.19.  I have not even built a 2.5 kernel lately,
  so it may be someone different maintaing the driver in 2.5.*.