I just noticed that, on i686, there is a text relocation in the libmpg123.so library which is a potential security problem:
$ readelf -d /usr/lib/libmpg123.so.0.29.8 |grep TEXT
0x00000016 (TEXTREL) 0x0
This problem seem to be specific to the i686 architecture as there is no such text relocations on x86_64. Both the 1.13.4 and 1.13.6 (I haven't checked 1.13.5) stable versions have that problem as well as the 1.14 beta version.
Let me know if you need more informations.