Will clip+ use sd card for recording?

My 4 gb clip+ is full of my music with little space left.  I also want to make recordings.  Will the clip+ automatically choose to store recordings on the sd card if main memory is full?  Or should I migrate my music over to the 4gb card and leave the main memory open for things like recordings?  Is there a down side to keeping your music on the sd card? 

It will record to the internal memory only. If you don’t have enough space, you’ll need to move some of your music files over to the memory card to make room for your recordings.