Using sshelper

I found this solution:

• Install sshelper on the device (no rooted device needed, available from google play market)


• In my WLAN the device is called "android". But you can use the IP, if you can't give the device a hostname.

Edit local ssh-config, to alter the default port for host "android"

.ssh/config

host android

    Port 2222

• Start sshelper on device.


• Connect android device to you WLAN.

rsync -rvlc Music android:SDCardLink/

Update
I prefere -rvlc to -a since you get a lot of warnings since setting permissions and time-stamps does not work. The option -c makes the second sync much faster.

I prefere -rvl --size-only to -a since you get a lot of warnings since setting permissions and time-stamps does not work. The option --size-only makes the second sync much faster.

Unfortunately it needs some time for music apps to see the new files. Restarting the device helps.