Another Plumb musician: Jason Plumb.

Some bass sites:

• TalkBass.com
• Bass Player

Some viola sites:

• The Viola Web Site - Name says it all.
• Oxford University Press - Search Engine
• Viola Jokes - A good compilation of viola jokes.

Some electric strings sites:

• Bowed Electricity
• Jensen Musical Instruments
• Jordan Electric Violins
• Ned Steinberger - NS Designs

Something you might want to try is this little sound bite I converted into .RA (Real Audio) format. Let me know how it works out.

In the mean time, feel free to look around.