Q I have close to 50,000 songs in my iTunes music collection. Besides organizing them in iTunes, I keep them stored in alphabetical order in two Windows file folders I created.

Now I'd like to permanently delete some of that music. But when I delete a song in iTunes, sending it to the Windows recycle bin, the song still remains in one of the alphabetized file folders. It was only deleted from iTunes' original file folder.

What do you suggest?

ANDY SELEZNOV, TUCSON, ARIZ.

A iTunes looks for songs in the Windows location from which they were originally imported. So it's not surprising that the song you deleted from iTunes is still in the file folder you created later.

There are two approaches you can take.

If a second copy of the song is still in the iTunes library, then you must have imported it to iTunes twice, once from the old folder and once from a new one. Try deleting this second song copy from the iTunes library.

If the song is no longer in the iTunes library, use Windows Explorer to delete the song from the alphabetized folder.

If you still have problems, you can download software at tinyurl.com/4zpf85d that cleans up iTunes by correcting song information tags, finding artwork, eliminating duplicate songs and finding where songs are stored.

Q We have Verizon Wireless cell service, but there is no signal inside our house. We can't make or receive calls unless we go outdoors. Some visitors have the same problem with their cell phone services, while others don't.

Is there a device we can buy that will measure the cell phone signal strength for various vendors, so we know which to patronize?

IRA STEIN, KEY LARGO, FLA.

A I don't know of a device that will measure and compare the strength of all providers' cell phone signals inside your house.

However, if you have a broadband connection you can buy a Verizon Wireless "network extender" device that effectively boosts the Verizon cell phone signal within your home. It works by linking to Verizon through your Internet connection, then broadcasting a cellular signal inside your home.

Verizon's network extender costs $250 but has no monthly fee. It requires a wired Internet connection with a download speed of at least 1 megabit (1 million bits per second.) That's slow enough that almost any broadband connection can achieve it. For details, see tinyurl.com/4gl8e8h. To buy a network extender, call 800-256-4646.

E-mail tech questions to steve.j.alexander @gmail.com, or write to Tech Q&A, 425 Portland Av., Minneapolis, MN 55488. Include name, city and telephone number.