Tags give the ability to mark specific points in history as being important
- implement independent channel muting on OPNA
- implement force mono on OPNA
- fix repeat none / repeat one play mode handling
- fix sometimes incorrect loop number display
- fix crash upon playing unsupported file
- fix OPNA dacstream timing
- display repeat mode in statusbar
- fix incorrect scrub bar size on now playing screen on long vgms
- fix occasional missing track number display on now playing
- implement workaround for differences in TI vs SEGA psg noise
- improve led behavior upon startup
- remove debug stuff from main menu
- code cleanup
- starting to get options working.
hw_rev1 code from this point back is targeting the revision 1 hardware.