We just read the release message from the PCLinuxOS team, and it mentions FrostWire is included in the distro.

This beta iso features kernel 2.6.26.6.tex2, KDE 3.5.10, Open Office 2.4.1, Firefox 3.0.3, Thunderbird 2.0.0.14, Frostwire, Ktorrent, Amarok, Flash, Java JRE, Compiz-Fusion 3D and much more.