I don't like Harmonix

My game shelf is getting overloaded so when a friend reminded me that I can download songs from Lego Rock Band to play them on Rock Band 3 I thought here's a game I can get rid off. Checked RB site and bang on the homepage it tells you how. So went on Xbox and eventually got a prompt to pay 800MSP to be able to do this! Not happy as I already payed for these songs when I bought the game. So now I'm going to trade it in just to get those 800MSP back. Annoyed!