Squeezelite Armv6hf will not pause when sending power 0 command through nc

```
What steps will reproduce the problem?
1. Play something to squeezelite
2. run "echo (mac address of squeezelite player) power 0 | nc ip (address of
lms) 9090

What is the expected output? What do you see instead?
It should turn off squeezelite player and pause the music (depending on the
player setting).

What it does now is turn off the squeezelite player based on the power light
button in LMS, but it still continues to play.

Pressing the power button in LMS does pause the music as normal.

What version of the product are you using? On what operating system?
squeezelite-armv6hf vs 1.7. Raspberry PI on Raspbian. LMS running on Linux Mint
17.1

Please provide any additional information below.

```

Original issue reported on code.google.com by `edmond...@gmail.com` on 6 Apr 2015 at 9:37