Ok I figured out how to do it.
I copied the lecture (audio) files directly into the file labelled "Podcasts" on my HTC One.
[OPTIONAL] However when I tried to play it using the Music app on my phone, I couldn't find the file. So I went to the menu of the Music app and added the Podcasts tab, I guess it hadn't been activated.
[ALSO OPTIONAL] Because I'm pedantic, my lecture audio files for some reason didn't show as their file names, but instead I guess as some file name that the lecturer had naed it (something like UNIVERSITY_SUBJECT_SM_2014). So I downloaded
this app to help me edit the names. Since my files were in the Podcasts app I used the "File Browser" from within the MP3dit app to change the titles.
VIOLA. Perhaps it's a long winded and convoluted way of making it work. If anyone has a better suggestion, I'm happy to hear it.
