A quick information, Slackware ARM 14.1 is EOL since 1st september 2016.
That means there's no more security updates, so same for SL4P-14.1.
I pushed what seems to be the last SL4P-14.1 build some weeks ago.
I'll probably push the 14.2 as the new stable soon, even if bluetooth still not work, and MPlayer isn't optimized.