Another sleep mode alternative: use Tasker on an Android phone.
1. set up a toggle pause task ;
http-get-post-commands-for-quick-mpd-play-pause-toggle-t788.html2. create a Tasker task timer widget on the android homescreen. Click the left side of the widget to set time interval. Then click widget each time you want to activate the sleep timer.
Similarly you can make Tasker turn on RuneAudio when your Android alarm clock goes off in the morning. (Look at the alarm events in Tasker for that.)