Need help with iPad, squeezebox, iMac

My iPad no longer controls the squeezebox over the wireless network. Something must have changed, but I can't figure it out. My iMac is connected to the Internet. Any suggestions ? thanks for your help.
Did you upgrade your ipad to ios6? There have been some reported problems with the Logitech app on that. ipeng may still work, do you have that? If not, it's well worth the $10. You may want to post on the slimdevices forum if that doesn't help.
Thanks, Saeyedoc. Yes, I did upgrade the iPad os recently. What is ipeng?
Ok, I've got ipeng up and running on my iPad. Still learning how to use it, but so far so good. Thanks, .... Matt