Stream music and photos from multiple computers over the web to your iPhone.

http://webot.com

A podcast, and rss media aggregator as well as a portal to the Wizzard Media Receiver system. Users can subscribe to Audio and Video media and upload their iTunes subscriptions for mobile consumption on the iPhone.

http://iphone.wizzard.tv

Need to tune up? Do it straight from your iPhone with this Guitar Tuning app.

http://iphoneguitartuner.com/

Pulls the current song on the radio in major cities.

http://www.timbergeron.com/current/

iPod-like streaming music player whose content is the best electronic music made by SampleSwap.org artists. All 100% creative-commons licensed.

http://iphone.sampleswap.org

SeeQPod allows you to browse a large variety of music straight from your iPhone. Pretty cool, actually, as long as you’re not browsing on EDGE.

http://www.seeqpod.com/iphone/#_home

Find FM Radio stations in your area!

http://stationfinder.griffintechnology.com/

LoudIsRelative.com iPhone edition gives iPhone owners the ability to quickly lookup concerts and other events in any zip code throughout the US. LIR iPhone also integrates with iPhone’s Google Maps and has direct phone call features.

http://iphone.loudisrelative.com/app/index/main