The new FrostWire 6.1.5 installer for Linux is a universal architecture binary.
The installer is now a bit bigger since we include 2 copies of our C++ native libraries, one for 32bit another one for 64bit intel cpus.
FrostWire will automatically pick up your architecture and use the right DLL.
We highly recommend you run the latest version of Oracle’s Java Runtime 1.8, preferrably the one for your CPU.
Official FrostWire Blog 