Does your rom already have audiomanager installed?
Is your default music player in htc home audiomanager?
could be irrelevant but if the answer to both is yes hard reset and follow your steps exept the installation of audiomanager.
if the answer is yes no do the above and then change the default media player in htc home to audiomanager
I hasten to add that this is sheer guess work but sometimes guess work is good.

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My Toys: T-mobile compact IV Advent 4213 Sony Vaio NR21Z/S Wizard Motorola S9's a Kayak and a 16gb 3g iphone
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