All FreeBSD ports are out of date on all LXDE component because there is now way to download links like this http://downloads.sourceforge.net/project/lxde/LXMusic%20%28music%20player%29/LXMusic%200.4.x/lxmusic-0.4.7.tar.gz it will be nice you fix you floder like more unix freindly or at less like this LXMusic 0.4.7. Notice that http://downloads.sourceforge.net/project/lxde/LXMusic%20%28music%20player%29/LXMusic%200.4.5/lxmusic-0.4.5.tar.gz work but not http://downloads.sourceforge.net/project/lxde/LXMusic%20%28music%20player%29/LXMusic%200.4.x/lxmusic-0.4.7.tar.gz.
You probably are trying to download wrong file. There is no lxmusic-0.4.7.tar.gz in that folder but lxmusic-0.4.7.tar.xz. Use right link, please, and you'll get the tarball.
Now I can say that I fell dum not noticing that.