Doesn't LAUNCHcast pick your playlist based on your preferences and listening habits? Seems to me, LAUNCHcast isn't your problem.
Right, that's waht I meant. So if you like Nickelback and Bryan Adams and Rush and other Launch users who like Nickelback and Bryan Adams and Rush like William Hung, then William Hung gets added to your playlist. So blame other Launch users with the same musical tastes as you.