Music playback issues

[lmichaelis]

Some issues noted by @Try in Try/OpenGothic#613:

• Track "On the Way to Monastery" doesn't sound right at all
• Area with pyramids is also sound odd
• Default soundtrack in G2 newworld.zen sound smooth but doesn't match OpenGothic-sound. Almost as-if different soundtrack been picked
• Transitions between tracks, doesn't appear to have randomization; and plays transition as-if it's combat mode
• Sound volume is inconsistent between tracks: main menu in G1 is very quiet, but game sounds normal

[MelissaAutumn]

I cannot say for Gothic 1/2, but with No One Lives Forever 1 I found the handling of DmPlayMode_CHORD_ROOT in DmPerformance_musicValueToMidi incorrectly offset notes causing pattern channels(?) to not play at all.