An update to this: with help from Wohlstand, it works using a mixture of my POL script and Wohlstand's LunaLua
I downloaded
LunaLua SMBX 1.3.0.2 (hexed) and after a long wait, extracted it into the directory where my POL SMBX prefixes are stored. For me, /home/<username>/.PlayOnLinux/wineprefixes/smbx/drive_c/smbx/
Then, in PlayOnLinux, I made shortcuts to smbx_lunalua_1.3.0.2.exe and smbx_lunalua_1.3.0.1.exe
Next, in the install components tab, install the following
vcrun2013
vbrun6
The next step is important: in configure, click the + next to Wine version. In the Wine Versions (x86) tab (yes, 32 bit no matter what system you're on) install the latest Wine. for me at this time, it's 1.7.47. Then after that all runs, switch the wine version in configure, let it terminate whatever is running and bam! It should work
And finally, here it is running under Debian 8.1 KDE
[rimg]http://i.imgur.com/DsD4Bta.png[/rimg]