So, I have a dlg-855 router and just put in a dap-1522 access point on the other side of the house.  They are both connected by eithernet.   If my ipad/iphone is connected to the router I can access "home sharing" music from my computer however if my ipad/iphone is connected to the access point i can't.  I can browse the web and do everything just fine from the access point just the home sharing goes away.  I have firewall, dhcp and all that disabled on the access point.  
If my pc and ipad/iphone are connected to the access point then it works.  It seems like it doesn't work if they have to bounce between each other. 
How can I fix this?