With "map" I mean "folder" / (sub)directory. This directory contains an epub and a series of MP3-files. The MP3s are not included in the Epub.
From a page in this epub I would like to refer to a MP3 using a link specifying a relative file URL in a <a>-tag. This way I can play an MP3 when I click on a picture.
My problem is: how do I specify the file URLin the HREF of the <a>? I know how to do this with an absolute file-URL, but this would tie me to a specific path on my - local - drive, and I don't want that.