On x86_64, xmms2 won't start, because of a shared lib soname mismatch, may need a rebuild.

$ ldd $(which xmms2)
    linux-vdso.so.1 (0x00007fffef255000)
    libxmmsclient.so.6 => /usr/lib/libxmmsclient.so.6 (0x00007f3b7555f000)
    libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007f3b75439000)
    libreadline.so.7 => not found
    libm.so.6 => /usr/lib/libm.so.6 (0x00007f3b752f3000)
    libc.so.6 => /usr/lib/libc.so.6 (0x00007f3b7512e000)
    libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f3b7510d000)
    libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007f3b75098000)
    /lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007f3b75618000)

$ ls -lh /usr/lib/libreadline.so*
lrwxrwxrwx 1 root root   16  7. Jan 17:00 /usr/lib/libreadline.so -> libreadline.so.8
lrwxrwxrwx 1 root root   18  7. Jan 17:00 /usr/lib/libreadline.so.8 -> libreadline.so.8.0
-rwxr-xr-x 1 root root 319K  7. Jan 17:00 /usr/lib/libreadline.so.8.0