Hey there,
I dont know so many about the cpu, the type ARM(?) and therefore which OS i can install on it.
On the Raspberry Pi it is possible to install Raspbian .. an OS which is compiled for it cpu. An ARM there my knowledge remain to remeber.

After some Wiki articles I pretend to know the Cubieboard also used an ARM type cpu?
So there should no problems to install another OS beside of cubian? ^^