Is it possible to have audio scrubbing disconnected from course navigation?

I'm currently in the process of 're-building' about 134 courses that were previously on a Learning Management System in a piecemeal format and now need to be packaged via SCORM. The majority of these courses go way back to our company's 'Distance Learning' days, and are primarily audio lectures for the main content.

I was hoping to have these audio lectures (a single mp3 file per course) directly embedded into our courses, and have been trying to utilize Captivate 2017's native playbar towards that end. The audio lectures are quite lengthy (typically one to four hours), so having the ability for a student to 'scrub' around is important. However, I do not wish for students to be able to be able to use the playbar to skip ahead to subsequent course slides beyond a single slide dedicated to listening to the lecture.

Is this at all possible while using the native playbar? I've been doing some searching around the forums as well as looking at external resources, and I've seen some similar questions but no solutions for what I'm asking. I was wondering if there might be a simple audio player widget that could be utilized towards this end, but I hadn't come across anything yet.

I realize that what I'm trying to do isn't really what Captivate was built for, or the ideal user experience, but it's what needs to be done for the sake of timeliness. I guess my last resort option would be to use a web object to play the audio without using the playbar, but that seems even less ideal (in various ways, including trying to keep the courses as 'responsive' as possible).

Thanks in advance!