[Sprint Samsung Galaxy Note 3] eldedo:
add playing song to playlist

<?xml version="1.0"?>
-<TaskerData tv="4.6u1m" dvi="1" sr="">
-<Task sr="task51">
<cdate>1419783111947</cdate>
<edate>1419804530430</edate>
<id>51</id>
<nme>SavetoPlaylist</nme>
<pri>10</pri>
-<Action sr="act0" ve="7">
<code>5262</code>
-<Bundle sr="arg0">
-<Vals sr="val">
<actionCode>62</actionCode>
<actionCode-type>java.lang.Integer</actionCode-type>
<com.twofortyfouram.locale.intent.extra.BLURB>[PowerAMP] Current Track Info, |, %POWERAMP</com.twofortyfouram.locale.intent.extra.BLURB>
<com.twofortyfouram.locale.intent.extra.BLURB-type>java.lang.String</com.twofortyfouram.locale.intent.extra.BLURB-type>
<f611>0</f611>
<f611-type>java.lang.Integer</f611-type>
<f612>%POWERAMP</f612>
<f612-type>java.lang.String</f612-type>
<f613>|</f613>
<f613-type>java.lang.String</f613-type>
<isValid>true</isValid>
<isValid-type>java.lang.Boolean</isValid-type>
<net.dinglisch.android.tasker.subbundled>true</net.dinglisch.android.tasker.subbundled>
<net.dinglisch.android.tasker.subbundled-type>java.lang.Boolean</net.dinglisch.android.tasker.subbundled-type>
</Vals>
</Bundle>
<Str sr="arg1" ve="3">pe.lastingchild.actionbox</Str>
<Str sr="arg2" ve="3">Action Box</Str>
<Int sr="arg3" val="0"/>
</Action>
-<Action sr="act1" ve="7">
<code>590</code>
<Str sr="arg0" ve="3">%POWERAMP</Str>
<Str sr="arg1" ve="3">|</Str>
<Int sr="arg2" val="1"/>
</Action>
-<Action sr="act10" ve="7">
<code>410</code>
<Str sr="arg0" ve="3">Playlists/Favorites.m3u8</Str>
<Str sr="arg1" ve="3">%FavplaylistStr</Str>
<Int sr="arg2" val="0"/>
<Int sr="arg3" val="1"/>
</Action>
-<Action sr="act11" ve="7">
<code>548</code>
<Str sr="arg0" ve="3">Song saved to playlist.</Str>
<Int sr="arg1" val="0"/>
</Action>
-<Action sr="act12" ve="7">
<code>549</code>
<Str sr="arg0" ve="3">%Favplaylist</Str>
<Int sr="arg1" val="0"/>
</Action>
-<Action sr="act2" ve="7">
<code>410</code>
<Str sr="arg0" ve="3">Playlists/Favorites.m3u8</Str>
<Str sr="arg1" ve="3">%POWERAMP1</Str>
<Int sr="arg2" val="1"/>
<Int sr="arg3" val="1"/>
</Action>
-<Action sr="act3" ve="7">
<code>417</code>
<Str sr="arg0" ve="3">Playlists/Favorites.m3u8</Str>
<Str sr="arg1" ve="3">%Favplaylist</Str>
</Action>
-<Action sr="act4" ve="7">
<code>547</code>
<Str sr="arg0" ve="3">%ret</Str>
<Str sr="arg1" ve="3"> </Str>
<Int sr="arg2" val="0"/>
<Int sr="arg3" val="1"/>
</Action>
-<Action sr="act5" ve="7">
<code>590</code>
<Str sr="arg0" ve="3">%Favplaylist</Str>
<Str sr="arg1" ve="3">%ret</Str>
<Int sr="arg2" val="0"/>
</Action>
-<Action sr="act6" ve="7">
<code>369</code>
<Str sr="arg0" ve="3">%Favplaylist</Str>
<Int sr="arg1" val="11"/>
</Action>
-<Action sr="act7" ve="7">
<code>369</code>
<Str sr="arg0" ve="3">%Favplaylist</Str>
<Int sr="arg1" val="0"/>
</Action>
-<Action sr="act8" ve="7">
<code>547</code>
<Str sr="arg0" ve="3">%FavplaylistStr</Str>
<Str sr="arg1" ve="3">%Favplaylist() </Str>
<Int sr="arg2" val="0"/>
<Int sr="arg3" val="0"/>
</Action>
-<Action sr="act9" ve="7">
<code>598</code>
add playing song to playlist, poweramp
<Str sr="arg0" ve="3">%FavplaylistStr</Str>
<Str sr="arg1" ve="3">,</Str>
<Int sr="arg2" val="0"/>
<Int sr="arg3" val="1"/>
<Int sr="arg4" val="0"/>
<Str sr="arg5" ve="3"/>
<Int sr="arg6" val="1"/>
<Str sr="arg7" ve="3">%ret</Str>
</Action>
-<Img sr="icn" ve="2">
<nme>hd_aaa_nixx_touch</nme>
</Img>
</Task>
</TaskerData>

you need action box plugin, then attach to any action you like, mine is attached to a nova launcher gesture.