I recently got an iMac, and am able to listen to streaming audio without it interfering with my other computer activities now.  I've listened to a few offerings on iTunes, primarily the ones under "Alternative".   I am so very impressed with LifeJive!  It's all I've played the past several days.  I also appreciate the lower kbps offering for when my son is uploading!  What a great variety.  I feel you are doing a great job of sharing your love of music, and plan to make a contribution soon.  Thank you.