Not sure if this will work for everybody but no harm in trying.
I was just onto SKY's technical support after having problems getting my SKY player to work properly (common occurence sadly). The poor guy sounded totally exasperated with the whole thing so rather than doing anything technical he gave me a code to put in for a months trial to get beyond my problems.
Was expecting to be given a unique alpha numeric code but all i was told to type in was FREETRIAL (all uppercase, no spaces)
Worth a shot for others, if it doesn't work no harm done.
Go to the link above and login / register an account if your new to it. Go to 'Accounts & Settings' and then into 'Subscriptions & Offers' where you should see a text box at the top of the screen to enter a code, enter FREETRIAL here and hopefully it works.......fingers crossed !!
Bear in mind this will only let you watch what you have on your existing SKY package, so if you wanted to watch SKY Sports for example on the player so would need to be a sky sports subscriber.