Changes:
- opening http urls fixed.
- file / save image... implemented (finally
.
- dx7/dx9 qt renderer fixed for 16bpp desktops.
- when using the /cd switch the current drive is checked first, where the player was launched from.
- the initial output buffer of the internal audio decoder was made a bit larger, means it may still work when there is such filter connected downstream which won't let the buffer size increased dynamically when needed.