Control room monitoring?

[Quinnc123]

Hey guys a have a quick question about tracking.

When im tracking artists from a control room i have just used a cheap mic into one of the xlr ins on my digi 003 rack + to talk to the artist im recording.

My question is how do i do this if Im using up all my inputs because im recording drums?? Like i said I have a digi 003 rack + and im running it with a mac book pro.

thanks in advance.