Finally had time to tinker with this, finally.
When I open a mp3 link within microb (the n810 OS2008 browser), it asks me wether to open or save the file.
IF I chose to open it it does so in the external media player. It’s working, I’ve tried a couple of files.
So, Yeah, without binair_proxy I’d assume that works.
The media player also supports m3u’s.
Sadly I’m an ebmedded software developer, not a javascript guru. I’m sure it could be fixed rather easily given the proper knowledge. 🙄