Dear Ian,
The Linux version is rather out of date but I am currently updating it.
The latest Linux source code available is:
http://sourceforge.net/projects/usbdm/files/Version%204.5/2.%20Source_4_5/
Eventually I will redo the GIT repository with a Makefile based version that should build under both windows and Linux (at least one of em).
bye
Update:
The current Linux sources and binary files have been uploaded to sourceforge.
USBDM - Browse /Version 4.10.3 at SourceForge.net
bye