First, start at the Walsh Library homepage. https://www.walsh.edu/library/. In the red Search-a-Lot box, click OhioLINK (it's tiny). On the next page at the top right, click on "OL home." Along the right side of the page click "Music Center."
By entering from the Walsh library website you are automatically linked to OhioLINK from Walsh and have access to resources that are blocked from public view. I haven't tried to access it from home, so you might need to enter your Walsh login information.