I, too, am having some problems installing mod_flvx on a Linux box. I've followed steps 1 through 5 using both your .so and Paul's. Upon restarting Apache, I receive this error:

Syntax error on line 38 of /usr/local/apache/conf/httpd.conf:
Cannot load /usr/local/apache/modules/mod_flvx.so into server: /usr/local/apache/modules/mod_flvx.so: undefined symbol: apr_strtoff

Googling "apr_strtoff" is futile - no help there. Am I missing a module that should be installed prior to this?

Thanks,
Tom