If you're one of those people who always finds out about a concert the morning after, then iConcertCal is for you.

iConcertCal is an iTunes plug-in designed to let you know about upcoming concerts in your area and upcoming album releases by creating a calender based the music you have in Tunes. If you like a band but not enough to buy their CD you can also add additional artists who aren't in your iTunes library and have iConcertCal search for those as well.

Both the Windows and Mac version of iConcertCal are available to download for free..so you'll still have money later to buy that tour shirt.

[via EmilyChang]