mixer\other?

my mother is having a baby soon.
since i won't be able to blast my amp anymore, and not to mention tab songs from hearing i was thinking about getting a mixer, and connect the stereo and amp to it and listen from headphones to both.
now, is there anything i should know about this idea?
is it a good idea? is there a better idea?
how will the sound be effected? will it suck more or less than the amp speaker? (i have really expencive headphones).
any recomendations? tricks?

Digitech GNX pedals have a "learn a lick" feature which enables you to pipe in a CD (via a boom box or stereo etc) whilst listening to you playing over the top via headphones.

Congrats on your new brother or sister! :)

How do you plan to connect the amp to the stereo? If you have a tube amp, you can't disconnect the speaker and plug that line into the stereo. You need a 'line out' from the preamp, or a special load that you can substitute for the speaker.

I would ditch the idea of getting a mixer, and just get an amp modeling unit in stead. Something like a Line6 POD, Behringer V-amp,... These devices usually have an auxiliary input through which you can connect an external sound source such as a stereo, disc-man,...