Although it's quite possible to access your song files from a network drive, it's really not recommended due to the high probability of encountering speed issues (latency) while accessing the files across a network.
However, if you still wish to utilize a network drive, you'll need to "Map" the network drive, thus assigning it a "drive letter" accessible by CompuHost. Once properly mapped and assigned a "drive letter", you can catalog the drive just as any other drive on your computer.
For instructions on "mapping" a network drive, visit the following link...
Mapping a Network Drive on Windows 7/10