ipad stream music from itunes server - can't be done?



I don't use Apple stuff much but I wanted to test out the possibility of using an ipad to stream music from an itunes library stored on a NAS. So I installed itunes server on the NAS, stuck some music on it and hey presto it all appeared on my desktop itunes client without any problem.

On to the ipad (using the standard pre-installed Music app). Seems it can't be done or am I missing something? Apparently you can only stream via home sharing which can only be done via a PC/MAC running iTunes with home sharing enabled.