Alright I know the general feelings on fm modulators but I wanted to show u this one available at
http://www.soundwithoutwires.com and also on
eBay for about $5 less than on the product site.
the product is the "Sound Without Wires MOD2" by
www.soundwithoutwires.com
and it is a 7 channel USB Powered Sound Transmitter that requires no software install and is completely plug and play.
Range of the signal is going to depend on the receiving radios antenna but I have seen 50 to 100 feet of distance in most cases.
The unit is constructed well and made from lightweight yet durable black plastic.
The unit has two wires on it (USB and 3.5MM headphone jack) that are long enough to reach around the back of a laptop (about 12 - 15") and you can use any device with it that has a headphone jack.
The unit carries a good warranty and was shipped on time in nice packaging.
This modulator is all of what it claims to be and there is a lot of good response and feedback coming in on this product and I personally use it on a daily basis and ill have to say its nice to sit in bed and have the sound from my laptop coming thru on the surround sound and then be able to use the laptop in not only own car but my friends cars too.
obviously permanent or more hard wired solutions are generally preferred by myself (I like custom applications) but sometimes quick and easy is the best route and leaves you with the most versatility
Thanks for the support and good reading material, MC