Just copy the files here into: /home/username/l1vm/web. The prog/webserver.l1com program will search it's files there if SANDBOX mode in include/global.h is set!
To run the webserver as Root:
# export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/username/bin && l1vm prog/webserver
Note you should use some kind of chroot to run it as a server for port 80. Or you change the port number to something higher.