Jhoff : good question, :/ but I think you can set how you want to run it with arguments ( and ask to do only id3 search ) if you run it normally it does the full job :

1) id3
2) album on folder
3) internet

The volume is a NASTY bug, we are trying to fix it, but what happens :
you have running on your device the OMS (osso media server) and a OSSO media player! we (CAnola) talk to osso media server) and ask it to keep the volume in the same level, the thing is that THEN from out of nowhere the default media player (even not actually running) goes there and sets up to it's volume.. thus creating this effect.

We are going to report the rror, ask to be fixed, but for now what I can say is try to open the default media player set something like your favotire volume and use it as bases.

BR

Marcelo