MP3 Trouble on BDP-S370

I first tested out MP3 playback on my Sony BDP-S370 bluray player through Mezzmo (registered) and noticed a pretty major issue. For whatever reason I'm unable to stop playback and return to the player's menu by hitting the stop button. I can jump between tracks, pause, play, ff/rw, but the only way I can return to the menu is to either let it play through to the end of the folder, or turn the player off then back on. This issue isn't present when playing from USB, and my father has the same player and it has the same issue with Mezzmo. Has anyone else had this issue and/or know of a solution?
Thanks.

Edit: Using Sony BDP (NTSC) profile

Please disregard and/or delete this thread. It turns out 'stop' does not return the BDP to the menu as I believe it does playing from USB. However, pressing exit does work, so this is no longer an issue. My apologies.