Player: Audiocard selection

Enhancement from earlier backlock:
Player(windows wdm player, ASIO player) Multiple audio card must be selectable same time.
Redesign needed. Multichannel playback possibility, or submixes?
Player is slow, there are audible glitches.

Start by locating the Player implementation and its Windows WDM and ASIO playback paths. Clarify whether the goal is simultaneous multi-card output, multichannel playback, or submixes, and measure the reported slowness and audible glitches. Done should mean an agreed design and working playback behavior without those glitches.

Written by the indexing model from the issue text.