Apologies for the issue with a bizarre redirect on the site earlier today. There was a large server update and an error in an IP address had the traffic routing wrongly. No hacking or anything nefarious and nothing to worry about. Sorry for any stress/anxiety caused. Very best wishes - SF Admin
I use Insighttimer and find it really flexible. You can choose guided meditations or just sounds/music. You can also choose by theme (sleep/anxiety/stress etc) and can choose by how much time you have - from 5 minutes upwards.