This article provides the steps to change a monolithic disk (a virtual machine disk contained in a single file) into to a split disk (a virtual machine disk split into 2GB files) in VMware Workstation.
https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2006898
TIP : You need VMware Workstation, not just VMware Player.