Plugin Defaults Registry Key:

Default options may be set in a registry key: HKEY_CURRENT_USER\Software\JPPlugins\APing

NameTypeMin.Max.DefaultUnitOption
CountREG_DWORD04pings/N:n
TimeoutREG_DWORD0600003000milliseconds/W:timeout
PacketSizeREG_DWORD126552064bytes/L:size
InstrumentREG_DWORD1128115GM instrument no./G:n
OctaveREG_DWORD095octave/O:n
ErrorDrumREG_DWORD358166GM drum no./E:n
OpErrorDrumREG_DWORD358158GM drum no./X:n
NoMidiREG_DWORD00booleannonzero disables sounds

User-defined macros are stored in this key as well.