Is there any way to block based on the vendor/agent string?

All of the corrupt files I seem to get are listed as "Gnucleus 2.0.1.0 (GnucDNA 1.0.2.6)", afaik Gnucleus is at a higher version than this, 2.0.8.0 or something.

I've noticed 3 things with corrupt files:
1) "T3" conection
2) same file size is listed as almost every bitrate from 128-320
3) Gnucleus 2.0.1.0 vendor string