************************************************************
You've installed mod_musicindex

Edit your apache.conf or httpd.conf to enable and setup this
module. 

And sample Directory configuration should looks like this:

<Directory /usr/local/www/data/musicindex/>
    Options Indexes MultiViews FollowSymlinks
    AllowOverride None
    MusicLister
    MusicSortOrder      artist album track title
    MusicFields         title artist album track length bitrate
    MusicAllowDownload
    MusicAllowStream
    MusicAllowSearch
    MusicCachePath      /tmp/musicindex
</Directory>

Then do this to make it work effective:

# apachectl configtest (see if there are any config errors)
# apachectl restart

************************************************************