Save position-on-quit and allow jumping to it

[humdinger]

This is hrev38627.

MediaPlayer could save the playback position as attribute to a file when playback is quit (either when MediaPlayer is quit or the file is replaced by another e.g. via drag&drop or when skipped by in a playlist).

This marker is shown in MediaPlayer's progress bar, e.g. as a coloured dot maybe with a tooltip "Last position".
There could be a menu item added to jump to that position.
Maybe it's enough, however, to make that dot slightly magnetic to easily scrub to it by dragging the progress-slider with the mouse.

Note, this changes nothing of the current behavior: Launching MediaPlayer will still continue playing the last file from the position it left off. Launching a file (e.g. by double-click) will still start from the beginning; the user has to manually jump to the last-position-dot.

[halilpk]

Haiku revision: hrev42211 still a bug. When you click saved playlist it always starts playing at beginning.There was no last position information or button . System: Haiku hrev1-alpha3 on VMware workstation 8 on windows 7 32 bit

[nielx]

Assign tickets with status=closed and resolution=fixed within the R1/beta2 development window to the R1/beta2 Milestone