Hey dear Anton. Please consider adding the "play in the Timeline feature" so that users will not have to click/tap over to another page and back. Doing so gives some users the feeling that they are needlessly wasting their time.

The videos play in the Timeline. For the sake of convenience and site uniformity, so should mp3 player. IMO.

For me, I do not want to intermingle my Files, which are PDF's, with the audio files. Most people do not associate Files, when it appears in a site menu, with podcasts or music. Therefore, that is no solution.

A programmer such as yourself could easily make this adjustment and probably wrote all the code... in your sleep. :)