Questions about WMA

[ulillillia]

I have a question involving WMA for my MP3 player. Those who know me should be familiar with my unusual music habits and systems. For those who aren't:

I listen to music at different speeds editting the sample rate of WAV files to change the speed. When I process my music for my MP3 player, I form a base file which is simply the song looped seamlessly for about 8 minutes (to help minimize the "gap" from reloading). I then use a self-created program to write a series of WAV files with only the sample rates changed (from as low as 10,000 (20% true speed for 50,000 Hz true speed) to as high as 500,000 (500% true speed for 100,000 Hz true speed)). Currently, I use a BAT file to batch convert these WAV files to MP3 files. Depending on the frequencies used, the format varies slightly. If no frequencies above 4000 Hz are clearly audible, I use 12,000 Hz at 16 Kbps. If no frequencies above 6000 Hz are clearly audible, then I use 16,000 Hz at 21 Kbps. For all else, I use 22,050 Hz, 28 Kbps. All are in ABR format and mono.

Now to my questions:

1. Does WMA support these otherwise very low quality formats (12,000 Hz, mono, 16 Kbps (for MP3 format))?
2. I've seen that WMA needs half the disk space usage for the same quality (that is, 128 Kbps MP3 and 64 Kbps WMA for CD-quality music (44,100 Hz, stereo) are about the same).
3. Does WMA support lower than 8 Kbps or oddballs like 13 Kbps that MP3 doesn't support?
4. What effect does playing WMA files have on battery life relative to playing MP3 files (I.e. does it last 30% longer or 80% as long (as examples)?).
5. Does my MP3 player, Creative MuVo2 4.0 GB model, support WMA?
6. Is there a free-without-limits WAV to WMA batch converter that allows me to resample the output files (like any player would support 300,000 Hz sample rates...) to something as low as 12,000 Hz? Lame does this very well and it allows me to set the bit rate.

Thanks for any assistance.