The file absolute path should be interpreted as relative to the proyecto

**Is your feature request related to a problem? Please describe.**
In Quarto the absolute path is resolved using / as relative to the project root. It doesn't happen with the path passed, for example, to audio shortcut using the parameter file.

**Describe the solution you'd like**
I think the embedio shortcuts should treat the path in the same way as the quarto project, if that is possible.
